Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6b08c52f6209b9…

MALICIOUS

PDF

76.6 KB Created: 2021-02-14 19:40:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: bc879f6ba7f32256f1a10e6460a5b4a7 SHA-1: 23687a06486f6b3452dc6aa4baf5fa94193f6c0f SHA-256: ce6b08c52f6209b9e80346f645782206202d127670fb3f9fe020300821381535
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://jottigo.ru/wix?keyword=contingency+approach+leadership+definition PDF link annotation
    • http://yesstore.pro/le_gone_du_chaaba_livre_en_ligne4na1o.pdfIn PDF document text
    • https://jobadenel.weebly.com/uploads/1/3/1/1/131164033/risametokugavav_vezuwemurudomen_buvorepad.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/sexitujabowujuk9c5x.pdfIn PDF document text
    • https://taruzabob.weebly.com/uploads/1/3/4/4/134493447/adf2f9441688.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490739/normal_600a85da6aeef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386089/normal_60228fa9c7d53.pdfIn PDF document text
    • http://subbellassecret.com/tamil_padam_2_audio_songgvowf.pdfIn PDF document text
    • https://nikakakuko.weebly.com/uploads/1/3/1/8/131871571/7147057.pdfIn PDF document text
    • http://lovechat24.club/mobile_data_automatically_turns_off_for_some_appsptfkb.pdfIn PDF document text
    • http://perevod24-card2card.site/72835299944g8lod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388617/normal_6009cd04dddf1.pdfIn PDF document text
    • https://pagevexositikul.weebly.com/uploads/1/3/5/3/135327712/43d827.pdfIn PDF document text
    • http://naturagrush.space/57116461727cwad6.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/navoburarovada/4476689479.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/93916918187.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/47643546780.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/investor_pitch_deck_keynote_template.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/rinoburaxe.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_off0000ef55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF55 5424 bytes
SHA-256: f946a419b8461abc8c9f56708049d76e963a722b11bb9c19567c83987700e227
font_01_sfnt_off000101cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CB 10352 bytes
SHA-256: 1cb8c7ed53ceec7f6165d29c864875d08c4db631d9391e0db7d011636a732a53

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