Malicious PDF — malware analysis report

Static analysis result for SHA-256 9efeecfb5c6de682…

MALICIOUS

PDF

85.8 KB Created: 2021-09-15 19:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 2ba143c46335e358717d95c9ed7b0098 SHA-1: 7e054091f3a30484c28851bf4a0510e33444e2c3 SHA-256: 9efeecfb5c6de68224489fb96f8bebbcd0cf9169646bf01c4d1587eb44fe9f9c
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URIs pointing to various websites, many of which appear to be compromised WordPress installations used for hosting malicious files. The presence of these links suggests the document is designed to redirect users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9877

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • 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://smidgel.ru/uplcv?utm_term=antutu+score+redmi+note+10+pro PDF link annotation
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ac85681c2c---vasasudomebawobipigud.pdfIn PDF document text
    • http://355353.ru/userfiles/file/maxutugonazotupegijopif.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/936dfece01fc2ffd9772a599ebc0ab06/51283338190.pdfIn PDF document text
    • http://hauptlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/20903836217.pdfIn PDF document text
    • http://primebrokeragetx.com/ckfinder/userfiles/files/41273933666.pdfIn PDF document text
    • https://betalinktech.com/blmedia/file/tuniridigavoroxuganupubod.pdfIn PDF document text
    • http://profitoolinfo.ru/ckfinder/userfiles/files/78464915784.pdfIn PDF document text
    • http://derp74.fooden.com/UserFiles/files/latubobiku.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/43244018069.pdfIn PDF document text
    • http://phyllisrubensteinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/23234560872.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb0b58029d---biruvumijefitidido.pdfPDF link annotation
    • https://path.mn/userfiles/files/lumagafixufokurujuwe.pdfIn PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/20576507125.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/48a61e2c3a7b02fcb7a953a128344231/45207275972.pdfIn PDF document text
    • http://drprdesaihospital.com/uploads/wowupaxenamuzapuguzowurof.pdfIn PDF document text
    • https://etevent.itweald.com/uploads/files/614080297505f.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/266374776425e274c389cd26cf3f327f/wipezejunonagifujisinof.pdfIn PDF document text
    • http://nano-vip.com/ckfinder/userfiles/files/vipewuwuzimiz.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161413790a6fd9---45171383775.pdfIn PDF document text
    • http://mnogonomerov.ru/uploads/file/mevizir.pdfIn PDF document text
    • http://www.ap-arte.ro/fckupload/file/lululu.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130fe1657cc3---14681902906.pdfIn PDF document text
    • https://bamfieldrental.com/userfiles/file/47582012283.pdfIn PDF document text
    • http://propack-th.com/image/upload/File/75819272320.pdfIn PDF document text
    • https://shellserva.nl/docs/Image/file/puvum.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC24D 21644 bytes
SHA-256: e449ce7e1a30375103184d7ac2aacb0f2240859c07b9015b34e0c95bc948a359
font_01_sfnt_off0000f9c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C4 10720 bytes
SHA-256: 7f65a8c37594ffeaf0612ac92093147b1314ec96807919601a1752174d4f149d
font_02_sfnt_off0001126e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00012a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A7B 1820 bytes
SHA-256: ef4c56b83544acc0eae329b123dcb13384a4443b8ee25b6b011fcec9f25c534c
font_04_sfnt_off00013300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13300 16148 bytes
SHA-256: b17e3c388ca520c70044df51a505a8c8de3d1ca9b2e495c629779bc8d31aca59

Open this report in the interactive analyzer, or submit your own file for analysis.