Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a2fafbfba81448…

MALICIOUS

PDF

86.9 KB Created: 2021-07-17 20:58:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cc0df6c24ae3ddcf01459f75d9ecc581 SHA-1: 259be92af0d8c5eea296c3a0db5e39d155c6ce49 SHA-256: 69a2fafbfba81448f97354ab2f1a703d71224231728a93fd9e9d01e4e5543e51
196 Risk Score

Malware Insights

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

The sample is a PDF document that exhibits characteristics of an advance-fee scam, using lures related to lotteries, prizes, and parcel delivery. Multiple heuristics indicate it functions as a link farm, directing users to various compromised or disposable hosting sites, likely to host further malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://ottotech.center/userfiles/file/rivinifoboserilatigej.pdf
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/48nkitsilmfd1v7ma51sguuhhn/widuluvavagun.pdf
    • https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/02396bf63c0512d554fa38627e585d05/gidotebepolajamotoro.pdf
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160850f4fdd935---29026188866.pdf
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608003e60e035---38804801886.pdf
    • http://ekonopuntos.com/campannas/file/19053799050.pdf
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e877e3480a---3601222414.pdf
    • http://daugiavanthienphuoc.com/media/ftp/file/34703096801.pdf
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/c439714da6e9b147b9a7b7eb3cf78617/4373666063.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/aha6s6cverenj8lf75rl7d7bt4/gaxid.pdf
    • http://jnafarms.com/clients/864068/File/25773199481.pdf
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c737baa0102---77732737296.pdf
    • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609644e76d983---12133119631.pdf
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ada17d1bae7---xejegugoguvarirajexinig.pdf
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/1381aa7c81bbf4ebd44ecf9449ee98b0/4096663703.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb68d54cdf---60038433874.pdf
    • https://store-connector.com/_upload_bilder/_filemanager/file/nozifevanefagigovusazogin.pdf
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607581b896b7e---tametususefe.pdf
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160926b003aa5a---bosesusuruwavexit.pdf
    • https://olivierdaulte.com/ckfinder/userfiles/files/63074230377.pdf
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607313080238c---86385432991.pdf
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/46356fb69f8057d6d6f6d14aa21b4e3d/zogoje.pdf
    • http://phillipsbricksalumni.com/clients/56168/File/zuwozufalusagab.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/406a81329d349b377074c4782312a3b1/64068173367.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=manual+testing+means
    • 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_off0000f1ce.bin
b593a8d1f9bb7567ff8ad7ef20f8373bb5031c2c4e9d948535ff4f2641d17194
pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CE 17524 bytes
font_01_sfnt_off00011f75.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11F75 16792 bytes
font_02_sfnt_off0001378c.bin
1ba2918bafbaf0110ceda488333995003e4f05f53dae24f127c126a9caa1d66e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1378C 10324 bytes