Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e60ed609508cd15…

MALICIOUS

PDF

82.9 KB Created: 2021-06-27 21:37:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e9a2a7dce392d022cc9b15ed2bc4c25f SHA-1: 22bded2cbb8135f3cdf61caf9ddd1e6f6eff97fe SHA-256: 8e60ed609508cd154c90907cd8e4c3c7f50008eaf97530439a80a07d3b8f5ef5
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links to external websites, many of which appear to be compromised or disposable hosting, likely serving as a link farm to distribute malicious content. No scripts were extracted, but the presence of multiple external URIs and the nature of the heuristics suggest the document's primary purpose is to redirect users to malicious sites, potentially to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://garglob.ru/uplcv?utm_term=rest+webservices+in+java+interview+questions
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8ac622909---daborukikevajujewin.pdf
    • http://lltsg.com/uploadfile/file///2021060423251351.pdf
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6bf982725---78154019000.pdf
    • http://textingrights.com/userfiles/files/lisegebolobuzawames.pdf
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c496d54ff8---40002724658.pdf
    • http://kenshopvn.com/uploads/files/lopewodipanugifiruz.pdf
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/a5cfbc0bc62f30ddc0a0440bbe084740/mibixuxis.pdf
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/tdjsrms6t1eep08pasj1c8ea85/44078812760.pdf
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/dabbc37b32e29221ed14400388dd3f49/13414099851.pdf
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a5d5c5c9c---12875363256.pdf
    • http://hy-concrete.ru/d/files/89139049819.pdf
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/1llc9kvmjul4k97psjtei0g9r7/25218817896.pdf
    • http://thamdinhgiadaiquang.com/img/files/ritisuni.pdf
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c77ccda0a8d---83376200324.pdf
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160a226e992c5d---kavivelipebufaneduzil.pdf
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/i4n5uh0d7ceokljoa6qnorqsc6/ritawekijepolalu.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093a7ceb115e---89138559392.pdf
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071c372b9870---34858391274.pdf
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/05e633fc2ba0c23f8ebe4e905dd77fa0/puderukiraxunurelufok.pdf
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c4ff338cac5---kavenujasixojunikinakuri.pdf
    • https://arendic.cl/files/remazuwazupiteg.pdf
    • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/c2281167d4fa8af3fa557b9a3c848375/gunilenogafego.pdf
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083236cc5dee---14524093756.pdf
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/a165d204c93e18b78df2d82934eae4cf/mijudiliridegikewu.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_off0000df34.bin
a52b8ee12717cb2b90c15b6c904e2d525801f9a5a011cdd6ab411f6e7c712134		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF34 17344 bytes
font_01_sfnt_off00010c4e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C4E 16792 bytes
font_02_sfnt_off00012465.bin
2787ca83f3558f3288a12007b948b256c282ab6e1f8e83999facf0275d02d817		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12465 10892 bytes

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