Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a9c9dd3a0da750e…

MALICIOUS

PDF

82.7 KB Created: 2021-03-19 16:34:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 39a7f3bce924c4efd3136846f3945134 SHA-1: 395d7ddab9340381b68b6d2df5c0e6a8b2e62218 SHA-256: 1a9c9dd3a0da750e26f5afbc7ad99ddd8ceb9a1dd1eb75c1acd5cd46708ec9b3
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 0.9996

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://golowaki.ru/aws?utm_term=what+is+the+best+blender+for+crushing+ice PDF link annotation
    • https://cdn.sqhk.co/mamevugixej/UFij1Un/66390425289.pdfIn PDF document text
    • https://cdn.sqhk.co/pidikuso/egd9lHa/pc_building_sim_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485301/normal_60054219abe47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421201/normal_602a579d33afb.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/dYhhVif/marorejureramuxiz.pdfIn PDF document text
    • https://cdn.sqhk.co/kizafizutuw/jbkhcYf/black_forest_cake_recipe_cooking_games.pdfIn PDF document text
    • https://cdn.sqhk.co/zivupowixede/ibiiibN/download_dark_sword_2_mod_unlimited_money.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444623/normal_5fe8764dcfdea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475217/normal_600bf3fb5be96.pdfIn PDF document text
    • https://cdn.sqhk.co/zisubiziwu/ZCD2AKT/all_smashes_my_hero_academia_dubbed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369499/normal_60292496e7f41.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/djaggvN/samsung_662l_french_door_fridge_with_family_hub.pdfIn PDF document text
    • https://cdn.sqhk.co/xupotuferu/xidmmjj/fanivawalinodaweva.pdfIn PDF document text
    • https://cdn.sqhk.co/xugiwatokax/Uhbjchb/simplifying_rational_expressions_kuta_software_answer_key.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373992/normal_5fe7214ea26e7.pdfIn PDF document text
    • https://cdn.sqhk.co/mewobonovagi/c4jfheR/vofetivavezube.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/iCyjcig/63484637221.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/takateg/govepivatifotubofi.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/29199084613.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/milogovifabebovu.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/autodesk_dwg_trueview_2012_64_bit.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_off0000f828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF828 5316 bytes
SHA-256: 22eef9c0b54640ed2a73fff2a137fbe9d0f01497cf31ab67d011fc523151321c
font_01_sfnt_off00010a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A33 10984 bytes
SHA-256: a3dc5f1eed066e8b70364fbeb1b182aa507efa9b59b43eb72b53e95929a348ed
font_02_sfnt_off00012f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F5A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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