Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c0540b346f629e…

MALICIOUS

PDF

72.3 KB Created: 2020-12-03 17:42:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e8941be81d2e8f1bc206ee76ed47997 SHA-1: 19423cecf635effdf195372f848100a6ab3120bd SHA-256: 63c0540b346f629ee807360dbf4d1b7d15311a38656205273d4f0329c1a03c43
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text fragments that suggest it is masquerading as a 'channel guide'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/strik?utm_term=etc+channel+guide
    • https://cdn-cms.f-static.net/uploads/4376099/normal_5fb26688a55e9.pdf
    • https://cdn-cms.f-static.net/uploads/4405652/normal_5faa6ea4543ff.pdf
    • https://cdn-cms.f-static.net/uploads/4371523/normal_5f947c93e00aa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/fopalew/sears_kenmore_elite_washer_owners_manual.pdf
    • https://static1.squarespace.com/static/5fc1c049c6d9645836281f45/t/5fc281b25147b14804842161/1606582707785/pathfinder_arcane_strike_natural_weapons.pdf
    • https://s3.amazonaws.com/xanebavifamopez/criticism_of_behaviorism_theory.pdf
    • https://s3.amazonaws.com/kibavutibeved/8089306546.pdf
    • https://s3.amazonaws.com/xidazeze/64794223929.pdf
    • https://s3.amazonaws.com/jifesu/words_beginning_with_has.pdf
    • https://static1.squarespace.com/static/5fc0f186bda9c57a97be6d6b/t/5fc4801a9b1ed035386d283b/1606713371278/dc_mansion_murders_address.pdf
    • https://uploads.strikinglycdn.com/files/151db247-d2da-45f1-8f67-6b8c1567e0fd/83498658196.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d206.bin
557b9c7bc237eeb776b6f7795b323acf037edd08db1fe11c95826a88ea050d79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD206 4656 bytes
font_01_sfnt_off0000e1c8.bin
e8ba10c219c94f591dc68b8783481adfe54fe12886bd4e18aadc8958385b933f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C8 10896 bytes
font_02_sfnt_off000106d1.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106D1 4324 bytes

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