Malicious PDF — malware analysis report

Static analysis result for SHA-256 d98ef72615f3643c…

MALICIOUS

PDF

70.9 KB Created: 2020-11-25 21:21:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7b906f93de0922891d413c12a528cc8a SHA-1: bb21fc093bb914539608b77da62cfb6582527ad1 SHA-256: d98ef72615f3643ca1b6cd10bd20ad4321fa674c8717807e1ebf35d574850a31
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 0.9997

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://trafficel.ru/123?utm_term=.cpp+file+opener PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366653/normal_5f88b4aa4955c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417318/normal_5fafdc1d3a1d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379384/normal_5f8e08ff65536.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f9b00722d5f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sabobenuwe/rujomisurosuxesunosip.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/juice_full_movie_online.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/bfd3_operation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/zasokofok.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/dragon_city_breeding_guide_cool_fire.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/skyrim_mod_that_makes_saves_like_se.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8407234-a805-49ca-8bb8-fa711bf97ef0/ardublock_tutorial_franais.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/ruwijovokopezeminenunoxo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCAC 4268 bytes
SHA-256: 134098fca9088f54fe0142fcd04af8e58ef0bfb848e219118479cf420a97df20
font_01_sfnt_off0000db13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB13 11524 bytes
SHA-256: c1b277923e92b509326e11438340bf65ff1dea07ec80fd529ca5f44c1eadb4fd
font_02_sfnt_off0001013b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1013B 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3