Malicious PDF — malware analysis report

Static analysis result for SHA-256 caa1cc49e28c639e…

MALICIOUS

PDF

80.2 KB Created: 2021-05-24 21:44:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8e34ff369ecc50090530a42ef973320d SHA-1: 5a385e69198ed3ecab585f83a1d71086d50b6e90 SHA-256: caa1cc49e28c639ea7e6581b99ea93571cc237cfd04bf455bc144346b4c0b475
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://baarspo.ru/strik?utm_term=coin+master+hack+spins+link PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459324/normal_60499f6035830.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459641/normal_5ff95122582e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373778/normal_6021293b72da0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473031/normal_5ff6684d47246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_604b50f9cfe10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464532/normal_6058424369086.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496374/normal_6031d92e0d3f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494868/normal_6021ab932ab3e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/runabizu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44bb3c87-447c-44d8-a5ec-ee5efd169f78/87077516827.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/what_is_terrorism_law.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/91522795464.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b751928-1b56-4647-9dd6-aafc4d3d5192/82696349968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e57a2c90-7415-42c0-8761-fa8bdd358588/kugososefilapiwow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26b1b72a-b218-4bd0-9475-84f6ef0a4ae9/gusawaxugotexefezosopoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c3b857c-fda3-4370-b36f-57b067f80715/how_to_watch_stock_market_live.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/parrot_bluetooth_car_kit_mki9200.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/jifegazetibo.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_off0000ee2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2C 5144 bytes
SHA-256: 1e8052ef07150a8f82ab4a59cca58cc2c9b3badd6ac95c54130c302810b50ed2
font_01_sfnt_off0000ff73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF73 10512 bytes
SHA-256: b69df1d263ce7db9bfab0a9c67c898cd186ecd09fb373b321e7181f269d89d35
font_02_sfnt_off000123a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123A4 4236 bytes
SHA-256: a127f1c4c1a6b65abfcf7a5e930ab2a9693e6266ffbdd9eeda90afc04addeae0

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