Malicious PDF — malware analysis report

Static analysis result for SHA-256 5543048cfef83bdd…

MALICIOUS

PDF

63.5 KB Created: 2021-02-12 15:47:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 01c4d080389a63d5ba741c9b56da886a SHA-1: aaf81f2b1c6c8d9aa2d7288364a8bbbe885e1162 SHA-256: 5543048cfef83bddbc4130a3173183ce10eb47355cf5e236688bb60925ff7d0c
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The embedded URL, https://seumenha.ru/123?utm_term=graco+pack+n+play+on+the+go+set+up, suggests a phishing or malware distribution lure, likely intended to trick users into clicking through to a malicious site. No scripts were extracted, but the presence of multiple external URLs points towards a downloader or phishing campaign.

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://seumenha.ru/123?utm_term=graco+pack+n+play+on+the+go+set+up PDF link annotation
    • https://cdn.sqhk.co/fafujedajir/zr0gisc/32385825673.pdfIn PDF document text
    • https://vifejekim.weebly.com/uploads/1/3/5/3/135322606/dejaxufizib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405922/normal_5fca13aba9d59.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/cIjfgef/kavexuriw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461511/normal_5fe66170c7839.pdfIn PDF document text
    • https://levevuwakute.weebly.com/uploads/1/3/4/9/134904524/3b0c32e9ecf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410217/normal_601145b55e1b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465935/normal_5fc8d2d8c5469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460461/normal_601aa55f5ff24.pdfIn PDF document text
    • https://bojuwakuxejekur.weebly.com/uploads/1/3/5/3/135347713/zuxazodukulifok_jubisavoju_wonefesan_ronotosop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422909/normal_5fcd013a1c90d.pdfIn PDF document text
    • https://cdn.sqhk.co/kanereneb/hcLggrC/wifi_driver_update_mac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447497/normal_5fcacbc25984c.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/pesetufavo/cover_letter_template_resume_now.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/taburidakogorosirid.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/girlfriends_guide_to_divorce_episode_5.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/lagu_akhirat_selamanya.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_off0000ba86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA86 5392 bytes
SHA-256: 5416d3a4bd5faee8295d70b1b5a5e5ffb57ffb4d21af52f6cf2e5fe365317b1d
font_01_sfnt_off0000cce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE9 10076 bytes
SHA-256: 95c003c79e102eb57c9ba90d7d2119a27df04bf21a70377a049fef6f0632fde7

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