Malicious PDF — malware analysis report

Static analysis result for SHA-256 703a17d5b950276a…

MALICIOUS

PDF

76.1 KB Created: 2021-01-12 00:09:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5e81e9657b3920d0f6fdaaa826228ce9 SHA-1: cc2106f531183a59820614aa9d23aaa8b4445cf9 SHA-256: 703a17d5b950276a32c3a62d567475322a60b6e9743f26036c05adbd5dcf9df9
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, including one to 'traffnew.ru', suggesting it is part of a link farm or phishing campaign. The PDF structure and embedded content, though heavily obfuscated, point towards an attempt to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffnew.ru/123?utm_term=edward+gorey+the+evil+garden+pdf PDF link annotation
    • https://site-1172092.mozfiles.com/files/1172092/happy_sunday_fall_quotes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418185/normal_5ff759ea7566d.pdfIn PDF document text
    • https://worijuxadije.weebly.com/uploads/1/3/4/8/134863955/kifofuniluridule.pdfIn PDF document text
    • https://bosijoputa.weebly.com/uploads/1/3/4/3/134317673/4122810.pdfIn PDF document text
    • https://majaxufekebobuw.weebly.com/uploads/1/3/4/6/134605083/24bb7e378c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426823/normal_5f9db62f158dc.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/gelifoga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480387/normal_5fc0fc6766a47.pdfIn PDF document text
    • https://site-1176228.mozfiles.com/files/1176228/webexilodewunitorabidak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416136/normal_5f9d152c0b584.pdfIn PDF document text
    • https://kabatinamipe.weebly.com/uploads/1/3/4/6/134636342/molefadozelefasulu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gavobawum/81528333253.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/56275767968.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/tuzagonanudinedafixabajiz.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/2015_movies_tamil_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/kingdom_animalia_phylums.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://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_off0000e510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE510 5336 bytes
SHA-256: 566fea23a2d867b11c8ce87a9e9876748a8bcbe2d5cc6fbbdbe6492c283d9097
font_01_sfnt_off0000f755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF755 14012 bytes
SHA-256: edd8c8f5a9a7b3b3fb2e3b8bc76872087ec2ebd5b9af1bfff68fa6677fc9b8b6

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