Malicious PDF — malware analysis report

Static analysis result for SHA-256 15e0796397e82078…

MALICIOUS

PDF

89.7 KB Created: 2021-01-26 09:08:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7563af674a319bf18bb49c56bc0f23d7 SHA-1: c60af545abaf186feca33b7799e87d356bee6b3c SHA-256: 15e0796397e820784e4315a77c6f2a9b2e18620ee337696cce2d000866c825c1
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 flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or SEO link farm. It contains a large number of external links, including one pointing to 'seumenha.ru', suggesting a malicious intent to redirect users. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links are indicative of a phishing or spam campaign, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/123?utm_term=what+was+the+horse+drawn+hoe+used+for PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393624/normal_5fe7871352c69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460447/normal_6002af178d893.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471513/normal_5fdc99d9e127c.pdfIn PDF document text
    • http://blaugrana.ru/hill_climb_racing_highway_game_download_for_pcrqw3v.pdfIn PDF document text
    • https://visofamawuri.weebly.com/uploads/1/3/2/3/132303269/6036200.pdfIn PDF document text
    • https://semetipakes.weebly.com/uploads/1/3/0/7/130775831/tebowifefejezizaresa.pdfIn PDF document text
    • https://wajirabipuxu.weebly.com/uploads/1/3/0/8/130874591/ac8ce0.pdfIn PDF document text
    • http://buytoday.cc/offline_games_2020_downloadnearh.pdfIn PDF document text
    • https://dadikokaw.weebly.com/uploads/1/3/5/3/135347495/9b9d8e5fe5519.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443610/normal_5fe11222481da.pdfIn PDF document text
    • http://idealica-ordina.site/cowboy_zombie_shooting_games_xbox_one5g8or.pdfIn PDF document text
    • http://myfavoritesun.xyz/2014382928362c4s.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/vatakefojunib/difajifakuwusovewuge.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/27074177429.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/childhood_s_end_1996.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/prismatic_compass_survey_report.pdfIn PDF document text
    • http://kijijaxozaro.epizy.com/67884878982.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/94941435808.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/fujixajime.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/33715744550.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE377 20012 bytes
SHA-256: 922962360847534f91d1fd8ac43c25d7bffb335cf5ca29699d25f933fd27cdbc
font_01_sfnt_off000122cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122CF 5068 bytes
SHA-256: 14eb09df0ae8f8be9781b1ec5a5a523f6d18ad122134b3c827d1722abf160e32
font_02_sfnt_off00013421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13421 10780 bytes
SHA-256: 1ba7cdf38563ba55977f72cdb751c9f3815b41b296f0e14f504690ef3b0d0695

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