Malicious PDF — malware analysis report

Static analysis result for SHA-256 2968a026f05a8b25…

MALICIOUS

PDF

74.7 KB Created: 2021-08-10 23:35:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: a8dd22af03b50699333ad1d40f24e265 SHA-1: bcc23da78163e4ffd3d86be27d035bf94920a6c2 SHA-256: 2968a026f05a8b25f8f26e0eed3d86a7e98491bebd2a3c398fd38676e8e2ecf1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://synerhu.ru/uplcv?utm_term=upendra+sir+sociology+notes+pankaj+copiers PDF link annotation
    • http://zkojicin.cz/userfiles/file/koboz.pdfIn PDF document text
    • https://shibbirs.com/media/files/gejoguzimewoziwaputekori.pdfIn PDF document text
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160969d0c272f4---kiximetofeguzogetiduzi.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/ec7749fe83581474834f61b4308073b8/bufevu.pdfIn PDF document text
    • https://www.la-melodie-des-saveurs.fr/ckfinder/userfiles/files/nepaxakomotuzagobos.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c7e9c7122a---xaloruse.pdfIn PDF document text
    • https://castilloexterior.org/ckfinder/userfiles/files/fezudemowizebaruguzox.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/fb94b7840e8d46f1f3ccf32bbad65426/vofosasofalakuzujef.pdfIn PDF document text
    • https://baongochoa.com/upload/file/viseponebud.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/lezijavuguludawores.pdfIn PDF document text
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/8f0512bb38a4d09bc44423865973660d/tasafenalenutezo.pdfIn PDF document text
    • http://portalinmobiliario24.com/uploades/fckeditorfile/96245514641.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/loruxagosikufovikajiva.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160983e1778c89---ladatabojobowedomemomuvog.pdfIn PDF document text
    • http://bong-dem-long.org/upload/editor/files/bamis.pdfIn PDF document text
    • http://innospectrum.eu/hirlevel/file/69841235915.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e78ba583a1---govuwibisunomidomes.pdfIn PDF document text
    • https://glearningsolutions.com/userfiles/files/dekikipuxikedimapa.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/f4cfac8dd94c44637ab135cfef62d716/kufekabinoxiwepediz.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/7c602ab57b88668ae99e53c9d100520b/84657167359.pdfIn PDF document text
    • http://bscartridge.com/pic/xuret.pdfIn PDF document text
    • http://hcvitamin.com/webroot/img/files/bopere.pdfIn PDF document text
    • http://auroraenergyproject.it/userfiles/files/netinib.pdfIn PDF document text
    • https://tmtteks.com/files/33705119890.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBED0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d6e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E7 11032 bytes
SHA-256: e57a47aacad39dec2ab88d1b05825602f6270ee0a88e8a1f02c2a97286a155d5
font_02_sfnt_off0000f073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF073 17156 bytes
SHA-256: 672bd8517e41eb7576a395c6ebdb0410f4db358fd43965eef842d966cafb1453

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