Malicious PDF — malware analysis report

Static analysis result for SHA-256 985941403ee24aaa…

MALICIOUS

PDF

71.2 KB Created: 2020-11-27 08:02:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0dba54365d169b31a526ca8a7101e0d5 SHA-1: db80fdda8b85bee37ad108bb08cbbf8a5af6f0c6 SHA-256: 985941403ee24aaa06d89e15992a8660f866e92ad861865b5b984b3543b7a928
104 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. It uses an urgency-based lure. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffnew.ru/123?utm_term=weight+gain+since+gallbladder+removal PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454803/normal_5faf67bde9ef1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387412/normal_5f93d291e26b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369302/normal_5f9096205fd59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421476/normal_5f9fc0553b25d.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/fa79baf2-b260-432f-810d-7ab0f6598f10/brain_simple_function.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/68241954156.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/42709063301.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/audio_converter_app_for_android_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cc879a6-ebb3-4af8-ae69-55f6318599a6/82878998370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f18fc19c-bf93-4e5f-b361-d8979dbf3771/american_express_app_for_computer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7d5f480-bc8a-42db-93e7-b40d4b0b0059/molecular_and_ionic_compounds_practice_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b695182-c0a6-4628-a48b-684823c3a684/17004246623.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/82736779915.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/black_ash_tree_leaf.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/nofelofomatomezexugesim.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA60 5564 bytes
SHA-256: 27c4c528a1a73b04fb2014f7a854bf9f2ecdcf32b3ab638de944865889122a1a
font_01_sfnt_off0000ed33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED33 10144 bytes
SHA-256: 37f148e624bd79d79f41ee13ab85b355d09174297fc02196479ae39bbb2b2dde

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