Malicious PDF — malware analysis report

Static analysis result for SHA-256 bafefd4d41acce0e…

MALICIOUS

PDF

139.1 KB Created: 2021-06-26 02:22:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 459e06109e3404a88ada195e907935f7 SHA-1: acc0fef3328e027605c3ed72f39eb1cfd2a967d0 SHA-256: bafefd4d41acce0e37dfba0a4222f09812eeb7acf606931412e7c53976ff0675
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links to compromised CMS upload storage and disposable hosting, suggesting an attempt to distribute malicious content or phish users. The primary lure appears to be a fake lottery or prize notification, a common tactic in advance-fee fraud schemes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://inwebjor.ru/uplcv?utm_term=ncr+atm+machines+manual PDF link annotation
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b68dbca5a8c---vaxelevixi.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/897e801b0add7052a33423af9dbb5a81/kedudutesiximizufikaj.pdfIn PDF document text
    • https://dezsredstvompx.ru/wp-content/plugins/super-forms/uploads/php/files/c9899183c6573c02d73e22a5fe83d9ac/vixumenugu.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096c385a0297---lataxak.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160758055543d1---mukadivewukikim.pdfIn PDF document text
    • http://sapaelitehotel.com/webroot/img/files/miminewimekulugum.pdfIn PDF document text
    • http://crmrealty360degree.in/userfiles/file/10341073804.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/065f54bff8def166b95e92da1de84b96/49148199010.pdfIn PDF document text
    • https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/n42v6bk42q3f05a95jq8l6rdb0/wodikox.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cc7d949fb3---jafukeg.pdfIn PDF document text
    • https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/fb6bfe7c4d4b3800b5af70addf394d5e/66989031619.pdfIn PDF document text
    • http://www.derbysignandgraphics.com/uploads/file/dunexobirunujagekuv.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607323330645a---48066988915.pdfIn PDF document text
    • http://twxcd.com/img-aim/files/rasubofegikekibuxomavuf.pdfIn PDF document text
    • https://rendiamovisibiliglinvisibili.org/file/golakakulebujoxubagavija.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b080b875502---pituxototoxagowiragalow.pdfIn PDF document text
    • http://podlahypilat.cz/admin/file/zuronibetusil.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfcb141aa0---sebixatopabijokoni.pdfIn PDF document text
    • http://blevy.com/ckfinder/userfiles/files/fezudupoto.pdfIn PDF document text
    • http://westtech1963.com/clients/d/d4/d4250bc21dcbbf02d7f9bc68df143add/File/24453272038.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/werad.pdfIn PDF document text
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/85aa75a5690cd5ebe3cac387457a7142/zisozarimifos.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_off0001bf35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF35 18540 bytes
SHA-256: 31cddb7a9b484a40d8f041dd475f2ca33174e52c001760afd240066b1c1707b3
font_01_sfnt_off0001efd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EFD8 10452 bytes
SHA-256: 2f29a20a66bd7ecd08be7befcef50316c5bcf0d5320f03008cda2219e6236e7e
font_02_sfnt_off0002075c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2075C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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