Malicious PDF — malware analysis report

Static analysis result for SHA-256 697efba29c377657…

MALICIOUS

PDF

87.2 KB Created: 2021-06-27 07:01:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 009df9a4bc2bab79c9e771ffb1da7f88 SHA-1: 0483d34ed83500d739a2affc2b9acb667407c325 SHA-256: 697efba29c37765729bc3215fe23e5667f1a04c4a1dab27dddf555fa5dd6fe7b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to host malicious content. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly suggests the document's purpose is to trick users into paying fees for a non-existent prize or parcel. While no scripts were explicitly extracted, the presence of PDF-specific heuristics and numerous URLs associated with compromised CMS uploads points to a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c579d6ae46a---xesejavoxumonibip.pdf
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/s2mo5sdqupcv91nuesvgo17u66/tonexekorimozurug.pdf
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/1cafd9eda1c41ac84147b4c659b8ede4/tadalexesum.pdf
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160bd4a9716210---zopufusotuni.pdf
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b54fd64efc6---xurunagegazoj.pdf
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/32d67f13efbb550305b26a9f4fbc4ce4/84526232575.pdf
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d33af440bb---xewanubowok.pdf
    • http://thedewakohchang.com/image/upload/File/afev.pdf
    • http://www.serenissimaservizi.com//files/vixufasekafixeno.pdf
    • http://buyyoutubelikes.com/ci/userfiles/files/ximomabofeburofaxubomoxo.pdf
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608a9331a5b96---kubilaxobaxomavavibopovi.pdf
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/a6dc14b517f0eea9cce2282f677d2182/70154231572.pdf
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/beximiboxesifukapikut.pdf
    • http://sbsinternationalschool.org/sbsisnew/userfiles/file/xilafamogijapubemasonip.pdf
    • http://vtdsbinhthuan.vn/public/uploads/userfiles/file/tenafeleme.pdf
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/lcorddjs47gms41mujmah0epi3/kabupidafimifewadusiveti.pdf
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c974d484427---50837195952.pdf
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0608b09d6a---97833712572.pdf
    • http://rencontres-icare.org/userfiles/file/53998955127.pdf
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160bf42187f49f---fagixawiz.pdf
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3bb0470fd8---dedidalivan.pdf
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/b41015cf91ef6eca29b48e06495c8163/wubanexogagabedamiximel.pdf
    • https://presstone.hu/userfiles/file/lebonaxeriginurev.pdf
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bf2e7884795---40987469323.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=julie+and+the+wolves+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_off0000f234.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF234 16792 bytes
font_01_sfnt_off00010a46.bin
5fcd257a3df96965903cbf4fe91fa6673681938f0b037326440be59b2dbc8315
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A46 17280 bytes
font_02_sfnt_off0001374c.bin
2f3ef87ab93f16240f21dac08c5f1a69c3cfa8a4174a0c91ae6ec74851a09d5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1374C 10740 bytes