Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f036e9bd9224909…

MALICIOUS

PDF

82.1 KB Created: 2021-06-28 03:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7ce28c486037bc5e80f9a89e4716b488 SHA-1: 6abf00a33521376aecc19d085610c3fff58d13b9 SHA-256: 9f036e9bd9224909b67f5b9836f909accb65d902dd61e8ff936312451eff906a
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of these links suggests an attempt to facilitate phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/ea558e36cabde2e6fcff33a34d2868f5/lejabekibukorad.pdf
    • http://beamstraffic.ae/amb/userfiles/file/vitibepiliwegejowafe.pdf
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160872de2c45f7---44141353538.pdf
    • https://bataretak.com/img/files/file/petalareniwesojuwegedal.pdf
    • https://kalyna.ua/sites/default/files/userfiles/file/vuzimetazono.pdf
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/d3eee3422f8037a173c193acb684184e/10905316240.pdf
    • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/9a6637d9f1f31ed91d840dc2c9a9e73b/25123354005.pdf
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/f0fc5b8b98edfa04646d16acdd342872/47834454361.pdf
    • http://petraifevronii.ru/ckfinder/userfiles/files/4592750038.pdf
    • https://www.rockfallco.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071544268b1a---tudilefugawu.pdf
    • http://acpiindia.com/userfiles/file/90170232604.pdf
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e13329ac0---xematigoredosegobuka.pdf
    • http://vencedor.coop/images/admin/file/12637934705.pdf
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c091329d1f9---47884393681.pdf
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/ea8ec04c731a810f864d52816811ae56/88008742454.pdf
    • https://cdpu.net/wp-content/plugins/super-forms/uploads/php/files/a61360a7b269f25f14f9b46517f39aaf/30148635649.pdf
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad4bc6ef8bf---77875306209.pdf
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/5cc68f4e33e7244c209a2496335d0bae/58885274876.pdf
    • https://alternatifhirdavat.com/upload/ckfinder/files/padulilareder.pdf
    • https://ev-owners.jp/userfiles//files/lezusifupebubabuni.pdf
    • http://phunggia.biz/userfiles/file/vunoviro.pdf
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c56d37a63e6---22584907256.pdf
    • http://panziofabian.hu/fck_kepek/11028167464.pdf
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090f2c2d4f98---66018806932.pdf
    • http://www.puhito.hu/uploads/mofunumi.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=all+channels+tv+apk
    • 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_off0000dddd.bin
2d19482984398f063f55ec67b718eed824698b3a3440b8284291d29dbd7fd752
pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDD 17548 bytes
font_01_sfnt_off00010c02.bin
4976510eb3b8d92135f67175e2e890cb0eeaf7e07fd89e401f43250a65bac1d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C02 10300 bytes
font_02_sfnt_off00012340.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12340 16792 bytes