Malicious PDF — malware analysis report

Static analysis result for SHA-256 1301decd7172a5a4…

MALICIOUS

PDF

79.7 KB Created: 2021-07-14 10:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 00fe60852354c13c772adf64abdd8e82 SHA-1: 972d85f454539c7fb0652ea677ed006d27db235c SHA-256: 1301decd7172a5a4c7fb7d9f547efbf68dc777e0684fa063fbf3319f009610b3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links, many of which point to compromised WordPress sites utilizing the 'super-forms' plugin for file uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the structure and URL patterns suggest it's designed to lure users to external, potentially compromised, resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/512f4356809bd7d2a4bee0ca1739d9cb/85020338344.pdf
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/a0b875d74e1608e329b685fe4e90445b/5739328667.pdf
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8867a914f5---48829620123.pdf
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/91b1f6a55d6e0c79710d1bcdd5553e62/29917349547.pdf
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/8c90mqftm14bc2fm7238lg9cbj/95259514938.pdf
    • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/biwirovisivejege.pdf
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/bovd4ik1t9534ho71q4eb9b527/20326574588.pdf
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160acf6b96428a---pegegokenov.pdf
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/e7ed7e0e14b46e5920e58d32997bf96c/kapewabadewokixefodu.pdf
    • http://czpohledavky.cz/userfiles/files/murupotuvini.pdf
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2cc4aaa2ef---loxedoluvadukibilaz.pdf
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160e3029ef0694---nekafi.pdf
    • http://camionespanamericana.com/userfiles/file/pidupuvofurebafigefuxuw.pdf
    • http://sanzmendia.com/userfiles/files/95927447039.pdf
    • https://luyenthitoeic.info/userfiles/file/59014164086.pdf
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/24721f1f4409e1d59b65f6fb3db208a6/87908099446.pdf
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c4d35e2cfc8---nokutumonoj.pdf
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/71c34e42172de3bbdb045f618cce7e20/wexojinojozedikinoku.pdf
    • http://lohs69.com/clients/82366/File/14860015610.pdf
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/e3d04036921288a3274e26bdf202b584/xeferazixulibejuxaw.pdf
    • http://unicaconsultoriarh.com/images/files/bixojefixita.pdf
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a85054fa2---975975254.pdf
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/uomdchgpdbn8f25s25quk017kc/99980642093.pdf
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/007e04ef929e4e67b2275ff550ef8067/68680775006.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=brent+smith+new+song
    • 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_off0000d0a9.bin
9611e3258f460690ad3ba65cb1d5f3eca05808001dd68ee304888d88f3ba4f25
pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A9 19368 bytes
font_01_sfnt_off0001021a.bin
46d4ed0e53d934891f73f75a2adf16c5f3c70c8fff732e8bd4762459bc65d489
pdf-font-stream PDF embedded font (sfnt) at offset 0x1021A 10488 bytes
font_02_sfnt_off000119da.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x119DA 16792 bytes