Malicious PDF — malware analysis report

Static analysis result for SHA-256 742b18ceb4678f66…

MALICIOUS

PDF

79.4 KB Created: 2021-02-28 09:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a38a9cc478a793f647eba31a9e54e3ed SHA-1: de6b88fcc9138189faa23e6decc67b3a5bfeab45 SHA-256: 742b18ceb4678f663e58589f40a1d372951f62f32a5bbeb35d7a9b1155b2bcba
126 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, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs, many pointing to disposable hosting domains, suggesting a phishing or malware distribution attempt. The presence of 'utm_term' parameters in some URLs indicates tracking or redirection, further supporting a malicious intent to lure users to potentially harmful sites.

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 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://botokaw.ru/123?utm_term=superhot+mind+control+delete+ending PDF link annotation
    • http://hayatevesigar.online/amarnath_ki_amar_katha91han.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502870/normal_5fce0da191b7f.pdfIn PDF document text
    • http://kadesevi.iblogger.org/96908003107.pdfIn PDF document text
    • http://sosutisokalelul.iblogger.org/convert_unit_rates_worksheet_answers_lesson_3.pdfIn PDF document text
    • http://sqrab.top/argumentative_essay_sample_downloadciwwq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408324/normal_601b546d3f35c.pdfIn PDF document text
    • http://mikazuxo.mypressonline.com/kujogugexozubas.pdfIn PDF document text
    • http://wwnews.site/56922332484cn8wj.pdfIn PDF document text
    • http://neo-tp.ru/situgijejolapawapedecaqp5.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/ludevofuneme.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zonafikepejese.onlinewebshop.net/30329023398.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/machine_learning_tutorial_resources.pdfIn PDF document text
    • http://fasokefukolu.epizy.com/53735308470.pdfIn PDF document text
    • http://rodedewezijore.atwebpages.com/56703537341.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/nowekemefom.pdfIn PDF document text
    • http://gurunetotej.rf.gd/akg_n200_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/wunekomima.pdfIn PDF document text
    • http://fetekovabu.onlinewebshop.net/dibezeluwumexew.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_off0000ed35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED35 5084 bytes
SHA-256: a5c94164e88e6e2696196b5c0c3b75b969b2f76391c5cc367a3ad193b823dfe1
font_01_sfnt_off0000fe57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE57 10516 bytes
SHA-256: 075830b1472b5a6b19b8b7bdf9d66ad8e68518670b565eac63f57171895fc6dd
font_02_sfnt_off0001225a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1225A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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