Malicious PDF — malware analysis report

Static analysis result for SHA-256 1de0d4b3307f6849…

MALICIOUS

PDF

77.9 KB Created: 2021-09-04 13:37:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 07495c2f101f702e94d2b1b092b0cc14 SHA-1: fcf41099617a94ee4beba67204797703f44c1791 SHA-256: 1de0d4b3307f6849d5f8697089105bacd25468f0bfc782a557b06c488235e0f4
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'. The heuristics indicate it functions as a link farm, directing users to potentially compromised or disposable hosting sites. The presence of a 'download button' lure further suggests a phishing or malware distribution attempt. Although no scripts were extracted, the overall structure and heuristic firings strongly suggest a malicious intent to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9827

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://huntic.ru/uplcv?utm_term=racgp+policy+and+procedure+manual+template+5th+edition PDF link annotation
    • https://angkalaris.com/contents//files/43519428854.pdfIn PDF document text
    • http://icsbc.ru/fuploader/file/57470108036.pdfIn PDF document text
    • http://jjw-led.com/userfiles/file/vemubuzijetakirafuror.pdfIn PDF document text
    • http://wjcopy.com/upload/files/fazezubejulugodixawon.pdfIn PDF document text
    • https://inncredel.com/uploads/65383964389.pdfIn PDF document text
    • http://hoangle.vn/uploads/userfiles/file/55100875048.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/faa5e14a9a8af55c822bbbb727d825f8/27916205298.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6bf982725---78154019000.pdfIn PDF document text
    • https://thaiahpa.com/flash/files/bojimulirulijakolup.pdfIn PDF document text
    • http://usarsenal.it/userfiles/files/26865529909.pdfIn PDF document text
    • http://www.agot.pl/upload/file/24152715544.pdfIn PDF document text
    • https://philly.drinkpoint.com/uploads/files/jixivabizinefilowixefop.pdfIn PDF document text
    • https://www.erenang.com/wp-content/plugins/formcraft/file-upload/server/content/files/160896afa86c1c---54822574698.pdfIn PDF document text
    • http://dalnoboy.org/data/filestorage/upload/files/47641808372.pdfIn PDF document text
    • http://dochoiotovn.com/uploads/userfiles/file/fineninawajunejos.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fa7c8fad309---rilirasirolifosodafo.pdfIn PDF document text
    • http://fundacjahfg.pl/upload/file/55063843737.pdfIn PDF document text
    • http://labonscafe.com/userfiles/gizavajinapapa.pdfIn PDF document text
    • https://alihuata.com/userfiles/file/19242059656.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/85784878436.pdfIn PDF document text
    • https://emenu.hu/editor_up/pizupida.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/82092375726.pdfIn PDF document text
    • https://ortechindustries.ca/ci/userfiles/files/vovejoxemewidave.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bde47b5bd7---19507545771.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/82974728661.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/xigopesa.pdfIn PDF document text
    • http://ehomeforeclosure.org/images/file/winoretiberakig.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_off0000c4f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dd0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0F 11188 bytes
SHA-256: 95b294b4093139a73c03932ae657df31e5a2054dac184d0e1778cc71a0967d02
font_02_sfnt_off0000f6e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E7 20016 bytes
SHA-256: 0062b0f0237e9b7a99000ad5e92f56efdc32ef78295ed936f78483ec55936bed

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