Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb56eab78dd9f9b9…

MALICIOUS

PDF

86.8 KB Created: 2021-02-28 11:11:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 92cf6fa0b459de446887d1b7b1147e1e SHA-1: 35e79692e386552e8a089a563a5793a13782b733 SHA-256: fb56eab78dd9f9b9649e22cc37a0ab0a370ee5a19f5b5bb0ac9f230b2b49e195
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://fokemale.ru/123?utm_term=calculate+the+force+of+earth%2527s+gravity+on+a+spacecraft+2+earth+radii PDF link annotation
    • http://tupaxeguna.scienceontheweb.net/stephen_king_the_outsider_reviews.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/jekekudezewatozoduwu.pdfIn PDF document text
    • http://dewisazovuvoxi.mywebcommunity.org/tudebum.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/waxabom.pdfIn PDF document text
    • http://xuzerujagojagip.scienceontheweb.net/itll_be_alright_meaning.pdfIn PDF document text
    • http://saxobupazes.sportsontheweb.net/how_to_fix_proform_elliptical.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406228/normal_60153460333e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416144/normal_60128b817d024.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/gezejoputiwinu/65137059669.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/daxatawofepav.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/cimbali_m29_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/legobegutulo/xumoza.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001134a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1134A 5648 bytes
SHA-256: 1363feaae2a4e89fd4febf8898781fa81b467fc877d44600dc7beef3025f8233
font_01_sfnt_off00012694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12694 11716 bytes
SHA-256: e7868d61a6d567f26a627120b6b739f824efbf3d96b19eec40cc885df6e1f8c3

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