Malicious PDF — malware analysis report

Static analysis result for SHA-256 6347a7b72b28a2ae…

MALICIOUS

PDF

196.7 KB Created: 2021-06-30 00:45:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 173e951d078089dd9fa10cab62836aa0 SHA-1: bdb6f2e300f4508ae135d4509ce44ccc3a2e885e SHA-256: 6347a7b72b28a2ae4ecead1f4f55e464888089253ce2fc3e09ee764d0f73d72a
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains heuristics indicating it is a lure for an advance-fee scam, potentially involving parcels or lotteries. It also includes numerous links, some pointing to compromised WordPress upload storage, suggesting it may be used to distribute further malicious content or phish users. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely related to social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://laetitiabernard.fr/images/file/67302657524.pdf
    • http://assushop.com/userfiles/assushop.com/file/gogazuwidojitujof.pdf
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a950d95fb1e---73262625747.pdf
    • http://thepnguyentran.vn/media/ftp/file/konubozewuvewilafokadu.pdf
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/f8h1gj0midam1sd30hktqgkkg6/4281327116.pdf
    • https://myarchitect.es/ckfinder/userfiles/files/tameso.pdf
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/jomoxumaxo.pdf
    • https://paron-rebondir.com/uploads/files/texelaxapojezajuwu.pdf
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/wojejupotimoxak.pdf
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c267af24eb3---wuvebujotivino.pdf
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/9ec10a1fa106c604e9f2346a7d11dccb/wuwusufejogosuvade.pdf
    • https://www.temsilcifirsatlari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160779033e7244---350315735.pdf
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/v8ilutevqp19aprenb8h7faim1/74577356791.pdf
    • http://c2r-auto.com/uploadfiles/file/2021060523223573499.pdf
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4bb0cd51d---mezinokefopifavijumel.pdf
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4c3560fbd---pozaguf.pdf
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/a48398caa08f8486f2d438dd456e50fa/57379589127.pdf
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e3d8375442---fesejisejekevu.pdf
    • http://nacyc.jp/Upload/file/77471289170.pdf
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/e85bdcdfd81b38f6013e550c8a296e6a/83434722075.pdf
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6e574bf36---22000556015.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=outbound+call+center+projects
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002a4f9.bin
162c5cab4e120a6428d062c90fcef7d25dcbc56ce19c0f240266eacd0db44720
pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4F9 10808 bytes
font_01_sfnt_off0002bde4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDE4 16792 bytes
font_02_sfnt_off0002d5f6.bin
e63bb0edc9c10c1a3afa46d540732c530657c755df2e7fd62849a4e9b5f8d708
pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5F6 17880 bytes