Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d3565a330ce1205…

MALICIOUS

PDF

73.3 KB Created: 2020-12-04 02:44:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 232ebd21c589d0eec61bf58e02b2afd0 SHA-1: 6bc632107dee5739f5e9a72e4006206a1716b663 SHA-256: 7d3565a330ce1205bd5162dced22077720f9b3bfafd282ad8540051086081547
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to a game guide, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/aws?utm_term=conan+exiles+dregs+boss+guide
    • https://cdn-cms.f-static.net/uploads/4374954/normal_5f89fc15a1c06.pdf
    • https://cdn-cms.f-static.net/uploads/4369901/normal_5f8d1b495a8e3.pdf
    • https://cdn-cms.f-static.net/uploads/4471236/normal_5fa9053f165ad.pdf
    • https://cdn-cms.f-static.net/uploads/4489244/normal_5fbf45b296350.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static1.squarespace.com/static/5fc36eab6609fd0ee7a18a99/t/5fc8ef787262e04a07156cee/1607004027451/jikanewaxedivopepon.pdf
    • https://uploads.strikinglycdn.com/files/8bdafe68-9b53-43b2-8dc9-d481c847640a/when_do_jim_and_pam_get_engaged.pdf
    • https://s3.amazonaws.com/pajeriramal/bios_lenovo_g40-_45.pdf
    • https://static1.squarespace.com/static/5fc1a00dd49dd124473946a2/t/5fc45fbf1972c46e3c297493/1606705088119/ang_probinsyano_october_3_2017.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1231803f460880cbb032/1606226482947/51938221636.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf1481972c46e3c646224/1606283593339/kefujaj.pdf
    • https://s3.amazonaws.com/xurixado/lobanopurirosed.pdf
    • https://uploads.strikinglycdn.com/files/b3c80669-ca80-4e0b-b6a0-8fc91e89d4ec/real_life_parabolas.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb77.bin
8cea64460de00fa55ba51b53b9a9f23cdb9b21e1d423c2f0fcfa41d5a15a3be6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB77 5028 bytes
font_01_sfnt_off0000dc82.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC82 1800 bytes
font_02_sfnt_off0000e510.bin
4f10433c04e875b1de71b45286ccc00290778ff5f19863ec70d9c00803aacaa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE510 10712 bytes
font_03_sfnt_off000109b6.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109B6 4324 bytes

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