Malicious PDF — malware analysis report

Static analysis result for SHA-256 70619fb1c62ca8c4…

MALICIOUS

PDF

74.2 KB Created: 2021-06-26 23:21:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9bfb3754e38a09f38f6ad4078b445a70 SHA-1: 577da690416968c85dd6ff8d45be227a3c62a297 SHA-256: 70619fb1c62ca8c4505556cce7915e0f91afa87da1a26485694c4839d18213c2
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains numerous links, many pointing to compromised WordPress upload directories, suggesting it's designed to redirect users to malicious content or downloads. The presence of embedded URLs and the nature of the heuristics strongly suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://inwebjor.ru/uplcv?utm_term=elementary+principles+of+chemical+processes+solution+manual+pdf
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084394af25fd---56543651066.pdf
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/7j5k5qeln4and5i9c1asm0sv1r/60409499234.pdf
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c451f5c5285---forolezubuxizironoged.pdf
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/g5kkrnjsbakb4fc3o4gibum5t3/likugopodebikovujivovesa.pdf
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/41433d22a542945c37d93f8b6e944e56/gofajukixotox.pdf
    • https://zoldlepes.hu/userfiles/file/80975895834.pdf
    • http://travelshops.pl/userfiles/file/vagebob.pdf
    • http://bhttourist.com/upload/fckimagesfile/wumipojatejekise.pdf
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/4d95058e6b93841ab6606c2a319ac73e/76135498149.pdf
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/061cb94a3b6778380de3e5a158d44bb5/59029604264.pdf
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/4ab230b6b05bbd9cb8466f8d1054d1ef/13221888452.pdf
    • http://ferrogep99.hu/static/media/file/98709660610.pdf
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1352e0e47d---sofuvezelejajubesov.pdf
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f117194d30---laxixuvowopejesutenapetux.pdf
    • https://oteaexpert.fr/cite_imgs/file/pesekubavuboma.pdf
    • http://www.psoealora.es/ckfinder/userfiles/files/gijaniwuzizakulilanasakow.pdf
    • http://zlato-invest.cz/upload/files/lalapugalologa.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/88c8f47c990dd37d75d315086c3c6f8c/18773643823.pdf
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/72cac2cd59e2df1b183adbfb70069e52/13831553313.pdf
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608c4d447336b---dededa.pdf
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16085a72b33d89---30081897188.pdf
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/b771c57761a6192c853d44a47c3f94e4/9383089957.pdf
    • http://stpatricksreunion.com/clients/84553/File/kemot.pdf
    • http://dichvugiayphep.biz/upload/ck/files/20743524776.pdf
    • http://jtipartner.com/ckfinder/userfiles/files/kibopujamivokizufaru.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_off0000bec7.bin
e327b394e667b1f63d4e92ca4c4acf3cd6c7721e25204773b369f4cc9f46f2d3
pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC7 11084 bytes
font_01_sfnt_off0000d85e.bin
272af7903f676c43e9b421306de50265b9cc41fa45fa33dbe1c0f32594ec74f9
pdf-font-stream PDF embedded font (sfnt) at offset 0xD85E 16464 bytes
font_02_sfnt_off000102cd.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x102CD 16792 bytes