Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3e9096e7f708821…

MALICIOUS

PDF

160.2 KB Created: 2021-06-29 06:35:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c31d53ff73536d70e4ca9f13732226a5 SHA-1: 5794a701d2a67d736f72ef3a64ea2966fcac11fd SHA-256: a3e9096e7f70882198347c42a4356340aa94b963824e6d97d7eea62b6452db5b
196 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. It contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms or disposable hosting, suggesting an attempt to distribute malicious content or phish users. The document's structure and embedded links strongly indicate a lure for financial fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9903

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://infrive.ru/uplcv?utm_term=if+the+attorney+for+the+prosecution+breaks
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/de39d4c41c493df899ca76b1e2df4b08/54807813533.pdf
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9fb2044363---guvebokekupezupemaxotajiz.pdf
    • http://allaboutdowney.com/userimages/nipatazowazemu.pdf
    • https://ludifrance.fr/userfiles/file/24011825394.pdf
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606d26ebc105f---66765789151.pdf
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1f0fc0b04c---44289754773.pdf
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/646ba345079c740bec42fa0e229ccf13/15429142142.pdf
    • https://kuzeyilac.com/resimler/files/95406720617.pdf
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/c0766927efe027f478df8470b6f3e016/67705345587.pdf
    • https://jdlpartnerss.com/userfiles/file/50859177664.pdf
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/6596d74478308929ca7821e572db975f/vonakivuzodezel.pdf
    • https://media-get.ru/userfiles/files/96829640542.pdf
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160806f3a412bd---reloxapizewiroviti.pdf
    • http://jrpst.pl/userfiles/file/76161303631.pdf
    • http://jrmhandling.nl/upload/file/12512649803.pdf
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c83ab59040---10401978170.pdf
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/umgqr40uc7fb8higuufj0jnvb6/gijabum.pdf
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099f602be43a---lodararupojid.pdf
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/nenedasixojadosujanev.pdf
    • http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606caa127a0e2---61507269415.pdf
    • https://baoholaodong24.com/userfiles/file/dulefetow.pdf
    • http://niszczeniewaw.pl/userfiles/file/66028539699.pdf
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/fujewotejisukiwigal.pdf
    • https://stijsr.com/userfiles/file/vukeluvibelibeduwiki.pdf
    • 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_off000213bd.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x213BD 16792 bytes
font_01_sfnt_off00022bd4.bin
ce863ede833e8f2e1cf19be7abf0740a3bf187a4afadf561dde250f33625e312
pdf-font-stream PDF embedded font (sfnt) at offset 0x22BD4 10928 bytes
font_02_sfnt_off000244ec.bin
4d7cc7cb756b8062cc7d768dbad46c969af316210ceb259d9806f89e5e9559aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x244EC 17444 bytes