Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5b58194e0e9269d…

MALICIOUS

PDF

135.7 KB Created: 2021-07-20 00:19:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f3a82565679454fcad718a92827b17c2 SHA-1: 73bc8b1287544601c6d7713cc101372728e5699a SHA-256: e5b58194e0e9269d6e124a748c3ffa02b3eba08e4279de16a048ba5638f35c0f
196 Risk Score

Malware Insights

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

This PDF is classified as malicious and exhibits characteristics of an advance-fee scam, likely intended to trick users into downloading further malicious content. The document contains numerous links pointing to compromised websites and disposable hosting, suggesting an attempt to distribute malware or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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 https://intervalhousehamilton.org/ckfinder/userfiles/files/ramobegoxizex.pdf
    • http://ambvetesopo.eu/userfiles/files/70530823565.pdf
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/na06mnl6tcm0e89m5e50sos9uo/ratedevivikevizirovibumut.pdf
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/ae5cd9cc7c5c945a008588272e197de6/12767051804.pdf
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/6bf50020d538238d7d6ab537a28ebe83/39387367646.pdf
    • http://itineraire-consulting.com/ckfinder/userfiles/files/1025165702.pdf
    • http://phannhan.vn/files/usersfiles/files/jofujesejeniselupak.pdf
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16075d69f3ecc4---25735912095.pdf
    • http://pestcontroluttara.com/ck/upload/files/89748508351.pdf
    • https://contabil-fiscal.ro/mm/file/87047453641.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160acab8eeefe9---kutatejufujotenisaf.pdf
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/160d1abd0e53fe---zobefekikazedujo.pdf
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/4851e4f826218e502bb61cdcfca2fde4/feriliver.pdf
    • http://amexeuro.com/an3_Uploads/file/tatarezoxatunixawejewowen.pdf
    • http://amdind.com/userfiles/file/63984017551.pdf
    • http://sns-russia.ru/userfiles/file/58595101682.pdf
    • http://sklepjola.pl/userfiles/file/sijeposujigodibowodozediw.pdf
    • http://dunajecbiala.pl/upload/File/87911362791.pdf
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/114b94b24927e50128b98261628135f1/vowifatobezuxuxebezo.pdf
    • https://egyptsuntours.com/userfiles/files/rudemarefadeka.pdf
    • http://grafordexstudents.com/clients/0/05/05b3dbe7dd9dc6f92b523d2b721f2ffd/File/73699329264.pdf
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160702cfb4145b---8882039581.pdf
    • http://industrialsupplies.pk/userfiles/files/47633693870.pdf
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/368b66d5837da9b51b4ba38abfc20a6c/jesetidugulakobedazazufu.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=noble+middle+school+staff
    • 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_off0001b1bb.bin
26f0fbc2b3551c79a6196d526559a6e878e0b147a9cc6f8c2eb7aab32b97f97d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B1BB 17852 bytes
font_01_sfnt_off0001e0c4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1E0C4 16792 bytes
font_02_sfnt_off0001f8db.bin
69f0036598df1e264a62c9d8cf4ab3c872bb3ae6629186632abefc96c599b24f
pdf-font-stream PDF embedded font (sfnt) at offset 0x1F8DB 10656 bytes