Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce1ee156f094953…

MALICIOUS

PDF

72.9 KB Created: 2021-06-24 10:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: aa175a98344aefc1448117ba994eba51 SHA-1: cf9c0d19ba8501f1c2558e11fd0b6121acc9d52a SHA-256: 0ce1ee156f094953c6061bf9458635d611d747872272c95084fa0544c34f98b6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. It contains numerous links to various websites, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains text related to 'minimalist ppt template free download', which serves as a lure.

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 http://szyldkj.com/luodan/images/userfiles/file/zalapujozovedulofijulo.pdf In PDF document text
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/ab52f8fb202c78e76a1a30945c41e48d/neluduz.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/c18aa668d09cee9934bf2270ce331491/kagoju.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/p5p87sc9su6mrhtbd7pi2iqaji/57981265489.pdfIn PDF document text
    • https://mszukam.pl/dat//file/35789560427.pdfIn PDF document text
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/dcd4aa51c0b2248be3799098f814ce32/lujovujireri.pdfIn PDF document text
    • http://kochamsushi.pl/UserFiles/file/82964302077.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/dd955cfc11e5315e653df0102ad19f1a/45375222103.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/376c97304567d65b2be96ce57e20c15b/41650676940.pdfIn PDF document text
    • http://prime-standard.com/piceditor/file/zelixij.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/o39pvjlscsknbma2dkvvvmiom5/kotudodejibuwat.pdfIn PDF document text
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/a9282b84ebd095a54676aac57b98c06d/58114930599.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a3b889ed10b---jurububemukik.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/4c1124080194088ca1fee2cdc21af2f2/44741282630.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/b5a1d7f6a3bca378169c5047d4693d07/96417198780.pdfIn PDF document text
    • http://norilskgu.ru/userfiles/file/vuwutevasuwuxokogasafix.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/1771d6c3e28142f15232f97ee84f61ec/rozuguzogakore.pdfIn PDF document text
    • http://msinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/74536207083.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079f5908e375---junakizale.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=minimalist+ppt+template+free+downloadPDF link annotation
    • 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE034 5284 bytes
SHA-256: 9fb5f6b70a5005d6aa2253ff57a9c8cda06b2c9634a8fd4e7f6faee5dbabdcca
font_01_sfnt_off0000f22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22D 10620 bytes
SHA-256: 86e05e69d60e16efa680fb5328bb975e5829e69f1cada3a28de2338af7382f7c

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