Malicious PDF — malware analysis report

Static analysis result for SHA-256 1018112afb1ae384…

MALICIOUS

PDF

74.9 KB Created: 2021-06-20 15:49:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1bf6107d322dd6f8c5a3e2538541d9ec SHA-1: bbec10e60cb33e9d0410a5c51118637ef87ecc37 SHA-256: 1018112afb1ae384a5b51eb66fa65bc63e4cf417a6d9d07553c45a419886c193
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or malware distribution lure. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting an attempt to host and distribute malicious content. The document body, though heavily obfuscated, appears to be a lure related to 'delhi master plan 2041 pdf download', aiming to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://garglob.ru/uplcv?utm_term=delhi+master+plan+2041+pdf+download
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16090ca1056bc9---pijepilabeninul.pdf
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4791684dc4---13873524095.pdf
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1608472db20847---36345266042.pdf
    • https://pmms-online.com/assets/file/jidivuj.pdf
    • http://nowyhotelik.pl/userfiles/file/47013974144.pdf
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/ae8f4ba78e41fa6dc05204c99fadea61/riredomu.pdf
    • https://pametnidom.hr/pametne_kuce/userfiles/file/nirubuvezo.pdf
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bff95678976---3561962985.pdf
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/72b6ee30abb6361cc716b9f8b9fd249c/sazogumijap.pdf
    • https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/6f378c86ebcb0c2dfd5fad88f1427031/38966474981.pdf
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/254d00ac6a9b8885f3b0a377c0fcf32f/xunalifi.pdf
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c20dc14ca4b---juranowurabugamatenase.pdf
    • https://robertbah.si/files/file/zexud.pdf
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/77fe22a69ea756d717749cbb2a681156/11703770063.pdf
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b23bbd0e58b---87902407619.pdf
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609536551d016---90544419250.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_off0000e6a9.bin
6b0cb428d7ba0e08e206e0db77e9da2528b462fc6db61bf036c7cbf523e488e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A9 5788 bytes
font_01_sfnt_off0000fa4f.bin
afd3478a997d626ff12ff22ce4ba1775d0ead9677ee74e1b7602f7d7460caaea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4F 10580 bytes

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