Malicious PDF — malware analysis report

Static analysis result for SHA-256 3094a034fb5c5f29…

MALICIOUS

PDF

65.9 KB Created: 2020-12-19 14:31:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c9dbb78a68a0f66057ae2ebd758edb35 SHA-1: fe0df83c9f46e79228492794e8ab9a6eb4c8eb48 SHA-256: 3094a034fb5c5f29b516dbfc0929ede3326ec01f2d713ae48168c0406f90d3f9
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 0.9995

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://trafffe.ru/aws?utm_term=bubble+packing+sheet+near+me PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454672/normal_5fc90b39d80fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404745/normal_5fb5464d61077.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392191/normal_5f90826bb8fa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471723/normal_5fad243885b2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500911/normal_5fbe18572d4c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444882/normal_5f9e95ff1f801.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/fosalizuzu/allen_bradley_powerflex_40.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/dokkan_battle_dragon_balls_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/546b1d2b-09af-415c-8194-9282bf09a452/dijibowegami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecfc8323-1341-4760-b3a8-b5b6858cc1f5/frost_dk_pvp_guide.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_off0000c540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC540 5600 bytes
SHA-256: 5fcb1dfa9533eaa71216a17ee49f3da025ba02ab809ffcee75c225a2c1f3273e
font_01_sfnt_off0000d81f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD81F 10300 bytes
SHA-256: e3c23f33c21a01c06a14be613671d4b31f889b6c9bd4385ec6474fbe018b39a1

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