Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a4b05e5333ebf49…

MALICIOUS

PDF

85.6 KB Created: 2021-07-09 19:51:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7f25d283601d6735abb980da8c25dde7 SHA-1: 79c98000adfb7c1bbdbc669fa832d300deb23450 SHA-256: 9a4b05e5333ebf49c4ad47f783e15b18ef4c5622295badc7200da0316a133485
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links to potentially compromised websites, suggesting an attempt to redirect users to malicious content or phishing pages. The document's structure and embedded links strongly indicate a lure for financial fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d9760250203---2691704849.pdf
    • http://salinasouth.com/clients/11073/File/wekizutosufunegejofewef.pdf
    • http://asupuro.com/user_data/image//file/30860097472.pdf
    • http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/zujadesolelelovasevamefep.pdf
    • http://thaoduocquyhiem.com/userfiles/image/file/rakakuparutigubew.pdf
    • http://www.findvoters.com/userfiles/file/21792508397.pdf
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160717f283540d---xeboxubiwo.pdf
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/2a9ad172a23d55ded76840ab63c3b522/47713757832.pdf
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/b70c00f94f39c69a0c816aefbbd9d3aa/16475979802.pdf
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/gep6vf8tjs5astsnn5u6bgslsm/52483120640.pdf
    • https://gymlesgeants.com/upload/editor/file/taguwosixope.pdf
    • https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608691c1cd6cd---85679360645.pdf
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160aa75201cec7---73908387755.pdf
    • http://hainescentreasia.com/images/file/xiwumijolari.pdf
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16081465c2799f---28560209021.pdf
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/ta0pqv9hhqnt9lf2i4qv52pbhq/pazes.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609562baf08d6---kojut.pdf
    • http://clearspace-design.com/CKEdit/upload/files/gixenuledozevuweget.pdf
    • http://halongbaycruises.org/upload/files/32409819187.pdf
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/c1c0f9c8308ed5c183f5bdc578e90f58/4005728193.pdf
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/62e2890010cfb4d5da0fdc207f6552c5/luzukutosojijavikox.pdf
    • http://albatrossmrn.com/konadnew/userfiles/file/30158096758.pdf
    • http://pvhs1967.com/clients/a/aa/aa78cb05297cd93d8a9ab6bd1eb8a3c4/File/xoxuti.pdf
    • http://nfraccon.org/userfiles/file/14506793146.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=how+to+sell+liquor+without+a+license
    • 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_off0000ed2d.bin
9ad1a644677329c31590b65c84031491932432ed76fb8443231c71abb43fad50
pdf-font-stream PDF embedded font (sfnt) at offset 0xED2D 16500 bytes
font_01_sfnt_off0001184d.bin
42243f6b45e9f8d3d21c3f77f073872b79afe41a4c3747a002f62e9bf6bbeac1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1184D 10648 bytes
font_02_sfnt_off000130ac.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x130AC 16792 bytes