Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e26459c9c537284…

MALICIOUS

PDF

84.9 KB Created: 2021-07-02 04:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 4b5e615f4355219d1ff32b7bb649aa9a SHA-1: de545ca7d0a327185ac71f7e417f1ae072433a6d SHA-256: 3e26459c9c5372844e3e693309c3e311e0d84d78903c7dae50f71874ac311eb9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://wastran.ru/uplcv?utm_term=gta+vice+city+download+for+windows+7+32+bit PDF link annotation
    • http://careerdynamic.com/clients/3/3d/3d9dba0a3645e5854abf1db7654b9c86/File/22805591255.pdfIn PDF document text
    • http://marinda.ru/pics/images/file/90697248449.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/3ccff1e5a3ae6614e90bbdb946cbbc5e/86141685662.pdfIn PDF document text
    • https://argentinaproduct.com/ckfinder/userfiles/files/44633954533.pdfIn PDF document text
    • http://elyriahigh1974.org/clients/0/05/052ab20d644b737728595af1a47b4450/File/42218096816.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16096c774b5095---laget.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/jh7ve56b7ltfsb5iuskl926uj1/11152170047.pdfIn PDF document text
    • http://rolfingnaples.com/clients/a/a5/a5422f62036d2d393d866963e902351c/File/8937920367.pdfIn PDF document text
    • https://gbagencement.fr/uploads/file/pufivizudamaf.pdfIn PDF document text
    • http://boothbayharborshipyard.com/userfiles/file/tuvukiw.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16079668b1688a---giwukuz.pdfIn PDF document text
    • http://coffee33.ru/archive/file/59266017640.pdfIn PDF document text
    • http://teifsepahan.com/files/file/labepalono.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/2d89658e61e37074b3e4b997e8865be9/sokebopetifufofemolapulu.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/2ca80962b224f41501e8b2629860da16/rubololozedefilosuzetaru.pdfIn PDF document text
    • http://solarissoft.com/img/userfiles/files/betujuzozo.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae58f3a2f6c---bejunigamuzujodudar.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/df5c780b1aeadfdc4e7a3c446f9d5397/62570678154.pdfIn PDF document text
    • http://tencanpowder.com/d/files/wezulizowowumazop.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/osbqs9hge82v74lh9bn6t7pl66/49899593231.pdfIn PDF document text
    • https://dondepodemosir.com/userfiles/file/kopidulunanarepozenuj.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/29208b3d852046eccff76fb76c48d591/ruros.pdfIn PDF document text
    • http://familiegravesen.dk/ckfinder/userfiles/files/zinaxawatapigibonevemede.pdfIn PDF document text
    • http://targdenunti.ro/userfiles/file/43361280237.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e68d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE68D 11256 bytes
SHA-256: 846521da0305e5531f2210e1ef61ab4a9f2b05ec677bac689ee170c8db78ad15
font_01_sfnt_off00010159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10159 17216 bytes
SHA-256: 1f1fd7feac30da16164955f0addb051b939e9c7ec3b44dcf45ad67ed0d3392d4
font_02_sfnt_off00012e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E39 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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