Malicious PDF — malware analysis report

Static analysis result for SHA-256 6090ab73777eeea5…

MALICIOUS

PDF

74.4 KB Created: 2021-02-22 13:38:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: df99fed35c54a1bddcce947410fd28e2 SHA-1: d96de9fbb974e8ed76dbef07cc0732315da033da SHA-256: 6090ab73777eeea533223f609449bef4debe059158ba92ddb1877012f1131353
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains references to 'dragon ball xenoverse 2 apk' and application metadata, suggesting a lure to trick users into visiting these malicious sites.

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 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://druttle.ru/wix?keyword=dragon+ball+xenoverse+2+apk PDF link annotation
    • http://uscreditmonitoring.info/15415328463345ii.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476285/normal_5feede850e96e.pdfIn PDF document text
    • http://mirror-x.org/fexixevmtbzl.pdfIn PDF document text
    • http://naturfresh.fun/voxekesomugashgj.pdfIn PDF document text
    • http://1eyvgo.xyz/baludalemuvazab3eb0u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475216/normal_600ea28dd9e1d.pdfIn PDF document text
    • http://bonus332.site/67639571696a4a01.pdfIn PDF document text
    • http://meetsalle.xyz/rinugosuguretokavibugly2ml.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381529/normal_5ffef255525ce.pdfIn PDF document text
    • http://losmopaka.site/apply_b_form_nadracxrbk.pdfIn PDF document text
    • http://idealica-official-it.website/zosajuvatitapbjaxa.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/21129471612dbrgj.pdfIn PDF document text
    • http://afracheat3.xyz/where_does_attack_on_titan_season_3_end_in_manga9ej3a.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/safenalavojuwu/aromatic_compounds_questions_and_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6A 5448 bytes
SHA-256: b50530a651483d931ba18674327bfad2b1c892cb5e6b46560e6e0238899848b3
font_01_sfnt_off0000f10c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10C 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000f999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF999 10184 bytes
SHA-256: 5cdbcc52faef4085e2b18976672ee87fe95eb294894bf78d31ad69bd61871538

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