Malicious PDF — malware analysis report

Static analysis result for SHA-256 a474103a6ccc3dad…

MALICIOUS

PDF

70.6 KB Created: 2021-02-18 10:32:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1296add3d253a4ccb2ddb9e234414a9b SHA-1: ee67f722f91cc559df08a73fab5d04cd9eb3990f SHA-256: a474103a6ccc3dad206d0fc0114513c00a13765b6112b2e4c5272eb09944b256
96 Risk Score

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/123?utm_term=acurite+temperature+sensor+replacement PDF link annotation
    • http://venupalu.iblogger.org/xarivasus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371787/normal_5fccbe20737ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366022/normal_5feb7e9291dfc.pdfIn PDF document text
    • http://nupubidodeje.22web.org/80939788278.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378151/normal_5ffab6d921249.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447433/normal_5fd3504500f15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448538/normal_60172b57f3aaa.pdfIn PDF document text
    • http://bimosoxadiz.22web.org/bury_a_friend_roblox_piano_sheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365583/normal_5fdcb11441daa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pigunefib.rf.gd/nufodojonisuvevegipeb.pdfIn PDF document text
    • http://vobujubiga.epizy.com/31031561642.pdfIn PDF document text
    • https://s3.amazonaws.com/dexodekelaseki/afari_afari_song_pagal_world.pdfIn PDF document text
    • http://gimusatis.rf.gd/figekubenuzexu.pdfIn PDF document text
    • http://wefixewixe.rf.gd/27776690516.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/17159278344.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/how_to_use_chaos_form_darksiders.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/wojotozogonow.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_off0000cfa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA8 5068 bytes
SHA-256: 3854d4640840e1e309bfd1c4e88fb00b1d63415bac879f7823ba0355aaa6ed71
font_01_sfnt_off0000e0c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C7 13664 bytes
SHA-256: a930b8d31ca562743322f58d4bbf409a99d164ab43c2e190cf9d4c1ecc075b8f