Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3a14e17a924634b…

MALICIOUS

PDF

80.6 KB Created: 2021-02-12 07:07:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 45701a2a3208730c08c3c2cc09074757 SHA-1: e93cdc4dd82fee4d31d9609596785ce7f0d3778b SHA-256: d3a14e17a924634bc1a2ac390afcd3c2501da80d8eb7aac210b163fea8398846
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, including a high-confidence ML classifier and ClamAV, indicating malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains keywords related to game hacks, likely serving as a lure to entice users to click on the malicious links.

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://jottigo.ru/wix?keyword=legendary+game+of+heroes+hack+apk+2019 PDF link annotation
    • http://prodive.su/everquest_mage_guide_2019m1ml9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466659/normal_601e8828a16fb.pdfIn PDF document text
    • https://pixumoxijabana.weebly.com/uploads/1/3/4/7/134748481/7256378.pdfIn PDF document text
    • https://kojozoxilasa.weebly.com/uploads/1/3/5/3/135302893/1767507.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458833/normal_5fc758c1bc827.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445325/normal_5fe152bec3204.pdfIn PDF document text
    • http://usechambre.xyz/dressed_to_kill_1980_full_movielgg6l.pdfIn PDF document text
    • http://all-host.site/anaconda_2_full_movie_movies_counteriuapl.pdfIn PDF document text
    • https://doxuginuf.weebly.com/uploads/1/3/5/3/135346615/jifukukazolefen.pdfIn PDF document text
    • https://dulewidojupetor.weebly.com/uploads/1/3/2/6/132695372/5600234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391340/normal_60164928aaca1.pdfIn PDF document text
    • https://nawawedivoxoni.weebly.com/uploads/1/3/4/7/134719505/875984c4f44.pdfIn PDF document text
    • http://medicalpracticementor.com/66990038564jc1ws.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/bjbgejb/wawokufisunixesuv.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/dugibabafod/likikebetiviwanozokudiwoj.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_off0000f45b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45B 6128 bytes
SHA-256: a63882c17ed987dc70af61f5f96380d33b65bf836a56f98235d42776e1a069c2
font_01_sfnt_off00010929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10929 13980 bytes
SHA-256: a3e967151f48c2c7a56010f523dbda399cf292ef2153c4809274bda4a8c25445

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