Malicious PDF — malware analysis report

Static analysis result for SHA-256 05fd2fe189e9c3c7…

MALICIOUS

PDF

73.6 KB Created: 2021-06-13 09:54:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a262937eff59244e4f8e00b6ead9a1c4 SHA-1: d371751ddff227e1ac0398f81e7f7a39f4213858 SHA-256: 05fd2fe189e9c3c7d4b85b550c263a32ff7ec62a1a6c0612d2ae3e4aab8332cf
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm or phishing lure. The document body, though partially corrupted, contains text related to 'English to tigrinya translation online', aligning with the URL 'huntic.ru/uplcv?utm_term=english+to+tigrinya+translation+online'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • 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://huntic.ru/uplcv?utm_term=english+to+tigrinya+translation+online
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/k1cm13q6sqcd0p458e0ters92r/suzikudonofujiferobi.pdf
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16082eeac78ced---babasukubudekezibafo.pdf
    • https://edu-mate.kr/_UploadFile/Images/file/31434516339.pdf
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609a175924de1---2496686627.pdf
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cebe52d67c---94839508348.pdf
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095083e5b45e---7657695198.pdf
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160803e34a0cf0---wakojafase.pdf
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609827a95580c---84948947995.pdf
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608340fe3b75e---turulunewiza.pdf
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/02707a92a1359538959dc23370ab81ff/66003088105.pdf
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/9aduvvjdfleqj6m33ns1d3p53r/viguniloduzoparadewoful.pdf
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/cc03951f0ab510730b19dc22c8a02756/22403418903.pdf
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/eb6cbf2108069de249dac8341f88f936/paregutikelobep.pdf
    • https://cowichanseniors.ca/userfiles/file/talen.pdf
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b2ff652b14b---jupegesimuziv.pdf
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3e99b8280---33199457190.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5a9.bin
acab8ca2788183b3a72fb0eb1d63abf35d0ddd929c7d1dd5c3ce873041dca014		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A9 5004 bytes
font_01_sfnt_off0000f6b4.bin
c09e14508b88d1f4a2a2e842990f92d3d7d4562b4effb931455360c08d1a0654		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B4 10164 bytes

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