Malicious PDF — malware analysis report

Static analysis result for SHA-256 0327ec2e194bf077…

MALICIOUS

PDF

74.9 KB Created: 2021-02-08 22:20:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a0b2c5dec86215c337d2bda4802d8ebf SHA-1: a0b8046e9683fc21fe225471c410412d1629aee7 SHA-256: 0327ec2e194bf07737dc926ebd4975ffbfc0b716c27f79d4bff6ec6d7e68837b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The PDF structure also shows signs of manipulation with duplicate object bodies, further supporting its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://leonvi.ru/wb?keyword=red%20formal%20dresses%20plus%20size PDF link annotation
    • http://storeeu.info/kenshi_training_dummy7agip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376404/normal_601ef6a7377cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415061/normal_6012774c427cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490274/normal_5fe83cc5c31dd.pdfIn PDF document text
    • https://cdn.sqhk.co/nupegefozub/mKgjhgD/kuvajizewezudogebilo.pdfIn PDF document text
    • https://cdn.sqhk.co/runetonorox/djhUhhZ/jowivebezugababimanoraxit.pdfIn PDF document text
    • https://cdn.sqhk.co/pikukafil/iXO9Vja/42512697369.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481676/normal_5fe14758b4731.pdfIn PDF document text
    • http://kengoru.space/11369722754q792b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471509/normal_5ff55be435309.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426816/normal_5fee47c91330f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479933/normal_60014862a87dc.pdfIn PDF document text
    • https://cdn.sqhk.co/wafasojudo/SMjhsNl/33330328173.pdfIn PDF document text
    • https://cdn.sqhk.co/dagidomu/jgWE1hd/external_electrical_meter_box_covers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478716/normal_5ff950e04869a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426696/normal_600e3224c2806.pdfIn PDF document text
    • http://immorta-cross1.club/sujolupowibiwobipusogigepnhdc.pdfIn PDF document text
    • https://cdn.sqhk.co/zifiguwosu/hgih6c5/truck_driver_bhojpuri_movie_songs_free_download_mp3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE780 5244 bytes
SHA-256: e8e8b5f1dd4c219d6bd321620947ef85bc5a8c85816f4d62181bf6e86b33b6a6
font_01_sfnt_off0000f948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF948 11016 bytes
SHA-256: a503201f1d23a20d66ccc76eef6b039af8ab1a71e1cede870aef6934d4096f09

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