Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c5282950dfbca6…

MALICIOUS

PDF

90.2 KB Created: 2021-07-08 04:36:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fe7ad193da4b907be6ff9ac382498293 SHA-1: 139a3c235108d817a5f3f5bc92b5d347da7f57d8 SHA-256: 95c5282950dfbca6815a96826fcf1cd0182158f9221546e8aaf8c7d421865c8d
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous links to external PDF files, many hosted on compromised websites. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick the user into believing they are involved in a lottery or prize claim, requiring them to interact with the provided links. The embedded JavaScript likely facilitates the redirection or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 8

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://ghhs1968.com/clients/5/57/5762190d0a265df614d1f295a7060a42/File/gilisixilo.pdf
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607238e2ab408---33908957024.pdf
    • http://tgtech-auto.com/userfiles/file/veripokepujufaxawef.pdf
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/j48m6pc08cudqhbgb2du3s6aql/lobijoxe.pdf
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16080e019057b4---lukesiwunemaw.pdf
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16084241ed57c5---felunajupixudilo.pdf
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1a6e94a045---bitetawu.pdf
    • http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210629052957988581zeaf1y.pdf
    • https://airflow-skateboards.com/upload/file/tananiledolujadumatot.pdf
    • http://hanarotalk.com/userfiles/file///63453340401.pdf
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c4b3a823e0---65389369304.pdf
    • https://canionglobal.com/FCKeditor/file/nuveku.pdf
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160807797523b3---11484597886.pdf
    • http://maxbrio.kr/files/files/dosux.pdf
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/10f460a9f8953348aa058aabba571cce/17641043564.pdf
    • http://www.southforconstruction.com/frontend/web/ckfinder/userfiles/files/ditapagesifanemizo.pdf
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/ab883238bf5c8f5d32a202e0d77c4261/96211218327.pdf
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/2f4d849955f5bb3f2e780147667d2644/44147299830.pdf
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a086fb35e6f---77956282944.pdf
    • http://montgomery71.com/clients/34132/File/mapatamixojogo.pdf
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/f4006af9e6c21c43e2dd1944ef773b5c/94761695368.pdf
    • http://alliance-ltd.com/userfiles/99763762897.pdf
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/3so7bp92efu04hp9m6ds9k1rjv/72162573604.pdf
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/98611b0aedd71b72271b84c6acfd8575/fonajamavetava.pdf
    • http://zhengfutz.com/v15/Upload/file/2021613058176911.pdf
    • http://ayhancevik.com/images_upload/files/41025523191.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=ridley+orion+2012
    • 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_off0000fdbd.bin
5e7e197f22daf212ae8be95b8ba92759753beade0199a861b64261ee2c0ebc80
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBD 17328 bytes
font_01_sfnt_off00012ad6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12AD6 16792 bytes
font_02_sfnt_off000142ed.bin
9da036dff29f9094931d9cfd1dbd0f01848c82a46cf21d9bb373dcf3b78630ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x142ED 10268 bytes