Malicious PDF — malware analysis report

Static analysis result for SHA-256 f57c38dc384a9a47…

MALICIOUS

PDF

97.5 KB Created: 2021-06-27 12:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a86fed839e6646cd6f61a63c479a722a SHA-1: a610a4c1b04745cb907e2cb7a32747aef25959aa SHA-256: f57c38dc384a9a47b78732b413c877adea135adfdae49a80780f45c8954ce539
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to websites hosted on compromised CMS platforms, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The file's structure as a link farm is designed to lure users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9802

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://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/cf2c21e4e79d2d4dc5c06f7e7b73d02a/gimiridatugisiti.pdf
    • http://bsl-trans.ru/admin/ckfinder/userfiles/files/wewopiderurufesotibeloxo.pdf
    • http://dzbnf.com/upload/file///dutowopisigu.pdf
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160967cb8c102c---90475692806.pdf
    • http://alliusie.com/userfiles/file/xugopovorivaroza.pdf
    • http://chuaphucluong.com/uploads/image/files/tifiruriwo.pdf
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608958b3bb3e6---79948900398.pdf
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/11255cea7d3f63255c6ec3aa96e8b1d6/zejubipomuburidevevivedi.pdf
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afea0d559ee---76115116635.pdf
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/5a2124cda31cd8f12a2ac79c4389b911/megasozedofolamejodez.pdf
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/5e315fcec5d636d1dc7ea8796a4d0559/66326913236.pdf
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b20e84411aa---96071224775.pdf
    • http://agcslohian.com/userfiles/file/27690909751.pdf
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc466b1476---xoboruxuvugul.pdf
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/16070cb37e68eb---57960153426.pdf
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/0a099bad8b958e8397b7e070bdfa5723/70562230794.pdf
    • http://bukharaatlanta.com/sites/default/files/file/50348234710.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606ceb16869ce---52315035634.pdf
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e875067a5---32863415023.pdf
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160744c202aba0---77223241658.pdf
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/52e352c7c6fe154b66a57b4d4fa25f02/27718878399.pdf
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed0e5c9a51---82817923497.pdf
    • http://ledseoul.com/userData/board/file/73909339024.pdf
    • http://jjmcp.jp/userfiles/Image/file/77463982149.pdf
    • http://vasvaripalmuzeum.hu/upload/file/tokamudepisa.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=american+idle+nude
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f59c.bin
8d4059b41365eb7fdc6cdb30043891ee4fed82754910de959df8fa283501d2bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF59C 2496 bytes
font_01_sfnt_off00010071.bin
511f6993446fb9882edf668536ae90126763256f838554808b964495ba5aec39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10071 17040 bytes
font_02_sfnt_off00011965.bin
3b6eb53af9a8ec308e4ad150db6fae1e315887ec46de963ccf4b1ef85b75f4ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11965 18404 bytes
font_03_sfnt_off000148a8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x148A8 16792 bytes
font_04_sfnt_off000160bf.bin
32aff3df1f5b2f7d4761d2fe92afc700cc9ce55b1c7ef535f0f904a218ae827a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x160BF 10224 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.