Malicious PDF — malware analysis report

Static analysis result for SHA-256 66a222ac8e2ed4c6…

MALICIOUS

PDF

77.6 KB Created: 2021-05-02 08:53:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 53cdacc730217f381056eeed036266b2 SHA-1: 729b637c24f5705c08a122e00b9e4715c969b672 SHA-256: 66a222ac8e2ed4c64ab9c3db19016e43340c20281a2d8c4c6ed7e26b7624245e
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://xezojetit.ru/strik?utm_term=which+dehydrator+for+jerky PDF link annotation
    • http://olx-delivery.cc/23641373030wj4k0.pdfIn PDF document text
    • http://copyrightram.net/978776627125n1ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451549/normal_605a62658b8f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382643/normal_604462340ca19.pdfIn PDF document text
    • http://rivuxini.66ghz.com/pokemon_card_game_rules.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368958/normal_6063d5c7eacf6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ed6db85-74bc-45a9-b167-447ad774536b/chit_navy_term.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe6d794c-1c57-4c00-b1cf-259b68ea0006/77063911829.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdbb2688-ad8d-49a8-a5ea-92c282424fab/36832409027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41a92386-6fc8-41bd-97e5-f50bb6e3d9bc/how_to_connect_ihip_headphones_to_computer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1159fbd-12af-42c0-a9df-71d9f950ec4f/44730336695.pdfIn PDF document text
    • http://rapevuf.epizy.com/meziguxalu.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/auto_vs_manual_gearbox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfd87adc-b9bb-461a-aafa-8cd3dd91ad9d/rosemarys_baby_streaming_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/43774069146.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_off0000f26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26A 5152 bytes
SHA-256: 994f82aca5286d31151e46986fc4b75b3a466584b3b21db4880fd990e3322b59
font_01_sfnt_off0001040e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1040E 11044 bytes
SHA-256: d8a250c830f2361e56a63a38620eb0c8f1be03448d9653764b4b4f417a29ddeb

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