Malicious PDF — malware analysis report

Static analysis result for SHA-256 512df738b3268df3…

MALICIOUS

PDF

82.1 KB Created: 2021-07-20 11:14:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3ece8488986cef3942e31c0010dada29 SHA-1: 905d679702a3acb53188526a09f1b583b7767b32 SHA-256: 512df738b3268df3084f5e398dd36343b3e0630888236c2bec14bd0cb1d35d04
196 Risk Score

Malware Insights

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

The PDF was identified as a lure for an advance-fee scam, containing language related to lotteries, prizes, and parcel delivery requirements. It includes numerous links to potentially compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://mrsjamesirvine.com/clients/82887/File/dusemaxitigudevojakuj.pdf
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/penr6i007pufleb6k0pdujvn5l/17745716218.pdf
    • http://ukrainski-rosyjski.pl/userfiles/file/46151881769.pdf
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d7e41a0f38---56781898518.pdf
    • https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/167908912784e4f2f40ffd4a7d7a4e1c/54836859311.pdf
    • http://ipublicity.cz/data/file/zaximasuvonuta.pdf
    • https://hospvetcentral.pt/site/upload/file/848026373.pdf
    • http://phutungtdc.com/upload/files/91372610415.pdf
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/ca1bab526e9d835dfc60b89f9d2c5eec/88433816079.pdf
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7f3f4eefa9---zawepotekup.pdf
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/9ec8619c6706738338a7de8df4938a7b/joroxefunusoxowesasefafur.pdf
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160da98d8b0e60---zabifigulovajorikovo.pdf
    • http://dogalakustik.com/depo/sayfaresim/file/97754983476.pdf
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/84681ccf808878454a5e6f149cce76f0/fanimu.pdf
    • http://voxel-avocats.fr/uploads/file/9880139684.pdf
    • http://www.hgbehringer.de/img/files/files/lavegafarivezurusek.pdf
    • https://deniz-sogutma.org/img/userfiles/file/42593626391.pdf
    • http://fairview68.org/clients/c/ca/ca24e3df3ff7fa9b839de6c08aba9959/File/gemewen.pdf
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16083e4a952a40---nubanejosulavovarewojufo.pdf
    • http://minhanh.com/files/84061699627.pdf
    • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/cdda32ad5d6c88f3288d8f0949aa3f07/29131970762.pdf
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/8ba572cd2b15d1c99787ea9687b78f38/lodevasesenejojir.pdf
    • http://mn-print.ru/ckfinder/userfiles/files/tixogorinuxufusebarebit.pdf
    • https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/694af7335f4ae400cbd871b0c4f85815/dudumusutamoboko.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=long+winded+rant
    • 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_off0000dcca.bin
0100982e28f545c084cc086437995cf42bc8521db05b1a7bf8567f003a8262e7
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCA 10252 bytes
font_01_sfnt_off0000f3d0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D0 16792 bytes
font_02_sfnt_off00010be2.bin
846afb6f49b7c49d86a3c22d7ae9ae2fda15d27b50482863dac568bed4c20761
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE2 17992 bytes