Malicious PDF — malware analysis report

Static analysis result for SHA-256 83b1d3e538e094f8…

MALICIOUS

PDF

73.9 KB Created: 2021-03-15 05:27:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bdb1d91378e3c2e703fa0074d86923c1 SHA-1: 54fbf4a89ec575a9baf2de68c3ad018de3d27ee3 SHA-256: 83b1d3e538e094f802765afda68852490bf104225926b092497ba9cad432810c
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://dafemum.ru/wix?keyword=the+lemonade+war+pdf+book PDF link annotation
    • https://cdn.sqhk.co/wiwevini/7VkHGhc/68048644073.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/formulas_de_geometria_y_trigonometria.pdfIn PDF document text
    • https://cdn.sqhk.co/taxodisilif/ggetUha/saucony_guide_iso_150.pdfIn PDF document text
    • http://posebakuxosafod.getenjoyment.net/generative_adversarial_networks_projects.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490272/normal_5feb07a671331.pdfIn PDF document text
    • https://cdn.sqhk.co/pilozarager/ghifIhh/red_alert_2_mods_mental_omega.pdfIn PDF document text
    • https://cdn.sqhk.co/nawiwola/gehaFij/baseball_boy_cheats.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496170/normal_5ff69b8d25b96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452850/normal_603bd0e7b8d6b.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/faluzotixupi/spurs_knicks_injury_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e0b189b-de6c-4f79-bc55-2e50d422d319/dobimanav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd783215-3826-4994-8a23-78dec248fef0/jbl_flip_2_battery_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e27599f4-9369-48a3-ba2d-dbccde306627/natonal.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/chopin_etude_24_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/60030878128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35efa1f4-f573-4933-bcb0-358fee0a2d2d/the_secret_dare_to_dream_trailer_italiano.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE251 5348 bytes
SHA-256: 6bc0521fc467348cb7d4e6494a6c1fa13e72f9a0c02682e99f0b522eae5ffd39
font_01_sfnt_off0000f461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF461 11516 bytes
SHA-256: 10a9c3535122b5b6c22314ae4c4325a009bb623524a5a3152e4ef85797293bbb

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