Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbe5aef2d76a5ebd…

MALICIOUS

PDF

82.9 KB Created: 2021-08-26 20:20:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 8bf9ac58648202d3b38d66f75063e4e4 SHA-1: 8cbd41cf61d914516977417312ed4473d39f6def SHA-256: bbe5aef2d76a5ebd856fb1db0fa658d054abb3fe17bdedd53b2a0a6c659438a9
244 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

This PDF document contains embedded JavaScript and multiple external URLs, many of which point to compromised websites or link farms. Heuristics indicate a social engineering attack, specifically instructing the user to copy and paste commands into a terminal (ClickFix attack). This suggests the document is designed to lure the user into executing malicious code, likely to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9902

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pistant.ru/uplcv?utm_term=how+to+export+a+davinci+resolve+project PDF link annotation
    • http://capitaldanceacademy.com/userfiles/files/nudifu.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0d4f93b694---gixedisawupifobaxojivu.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/895dcfc7b98d6e1c4f7878cc31c41336/42507771686.pdfIn PDF document text
    • https://gabinetpro.pl/kosmetyczka/krakow/files/79151653841.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/52281142463.pdfIn PDF document text
    • http://cosmik-kinoteatr.ru/sadm_files/jakadivadi.pdfIn PDF document text
    • https://dtd.com.pk/ckfinder/userfiles/files/seredolepipewugu.pdfIn PDF document text
    • http://saltokisport.com/uploads/files/lixugozidubuvafuno.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b98b1abd999---rililomexigif.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/63306233394.pdfIn PDF document text
    • http://horizonpestservices.com/userfile/kejemafajufitepenozujali.pdfIn PDF document text
    • http://attlas.center/userfiles/file/69816806227.pdfIn PDF document text
    • http://bagiez.com/userfiles/file/93714217.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/53789483214.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be0f24cc24b---88503960263.pdfIn PDF document text
    • http://petraifevronii.ru/ckfinder/userfiles/files/32790201972.pdfIn PDF document text
    • http://hoangduy.vn/vn/files/70907159812.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/13a8e241fde18bab0c90dc6edb8cfe7a/wirudatazagozapogirekaf.pdfIn PDF document text
    • http://graylegalservices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/3689033666.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/accee4dd41b858b3524c42cb838f99db/detawakur.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/4676555c1cf9917ad202d2966133a5a3/vuvugarovubulagomidaz.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/ajuri8d986ltitsgibksjo4nmg/kurelorodexababud.pdfIn PDF document text
    • http://viacaosaopedro.com/www/js/ckfinder/userfiles/files/rofakafafesonasiti.pdfIn PDF document text
    • https://cytairtool.com/test/userfiles/file/20210820_c64e5.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a0b10aede---tekaxegejukufuto.pdfIn PDF document text
    • http://epoch-making.jp/js/upload/files/59719151282.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/b360f8cd568030b6305d22379df8f4ad/kowepogatapesawowa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF780 16544 bytes
SHA-256: 926b28eaf9024d20d5475d271751535b791da10e7bcd49794cb5ce4607f455f4
font_02_sfnt_off000122de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122DE 10880 bytes
SHA-256: a19e3edc78550734596386e9efdd56c50dd21951ab197d501749eebb7ba43800

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