Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b0f81e88bb37546…

MALICIOUS

PDF

97.3 KB Created: 2020-11-11 06:14:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a0086b845a8e2ff437303fb018aae525 SHA-1: bc24ee04fd84b0776de643b1106dd287ae3f3ea2 SHA-256: 0b0f81e88bb37546d5bac91840e94e7d386ecc78d1ad736e259e8a3f19e1ae77
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://traffset.ru/strik?keyword=hannah+montana+games+to+play PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4468571/normal_5fab54cd0a79a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464735/normal_5fa4bc7d7bbd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417530/normal_5f9b99e85c633.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367680/normal_5fa7d5bcde3d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469128/normal_5fab54d689db5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446634/normal_5fa162e849c78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369657/normal_5f897cf4f3989.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469143/normal_5fa5ed750854f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403959/normal_5f93e3903b215.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454040/normal_5fa188f3ab800.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/legenapi/pogoko.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/boliwuduvetanalumasipitis.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/kenwood_kfc_w3013ps_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/solstice_and_equinox_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/45381026387.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/13437403318.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_off00013fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FC1 5200 bytes
SHA-256: a0d2ec7c7300e0b821615be9008bddd29a0d995bb67e24930d0623f34f6cdd97
font_01_sfnt_off0001515b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1515B 11432 bytes
SHA-256: dc77f3d82d2f930e9585cc28e48301cc60d12dcfda40a752179cbc08c3b22a80

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