Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c3573391228de4…

MALICIOUS

PDF

58.5 KB Created: 2021-05-15 10:48:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23b54a6d7fe78bcceca68ceb69981de5 SHA-1: 3f298de495dfd7d96295e1a37f75ca4d889fb93b SHA-256: e8c3573391228de49ce78e49407fb4ac6f2fa3c8c68992385eedb9072b4e9c65
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a link farm pointing to compromised WordPress upload directories, likely serving as a lure for cracked software like 'Ammyy admin'. The document body is heavily obfuscated and unreadable, but the presence of multiple links to potentially compromised sites suggests an attempt to redirect users to malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8253

Heuristics 5

  • 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
  • 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://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/b30fa682f023d9237b32f505e44ac9f9/69252738635.pdf
    • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/650493fad3c5349944561b7ec2342a3a/31794932055.pdf
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/bc724188cfbe00147a522df36bc831a9/kavasuxazuxolenapit.pdf
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cedb388ae0---tojeb.pdf
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a22ead01a---kudusotilenakitezibafupel.pdf
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e616c9e012---41863829428.pdf
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/c0i44plvhlb5kccpqeie5h6j9u/fusepabumererelizeke.pdf
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/m64ggmk4325q66ngcndfg4tip1/14155515485.pdf
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/378607c346877ac1649865fae02f006d/48168398988.pdf
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607434fbc6ef4---41832268530.pdf
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cde53b7285---99796431044.pdf
    • https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/6p1ddov4rf58jagjvfc8fdots2/50788780338.pdf
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b24d29de48---67472614811.pdf
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ed35d41d1b---xasug.pdf
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca6bab9661---14434434728.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=ammyy+admin+crack+3.+4
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4af.bin
44e59df0c8a0bf325a8cefc1caa8752c123e3f568adb11c67f00315e9e615928		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AF 5316 bytes

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