Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cd5e2b94bac4ea4…

MALICIOUS

PDF

68.3 KB Created: 2021-01-11 23:38:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 677d817e74b590d80a201bb1e7481b14 SHA-1: 99a223b481a005dc4e36900bfe989c25501926d5 SHA-256: 1cd5e2b94bac4ea4c1a112e0c7a3f7068ce56c49c31893ee493e6d5d8037e6e3
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'traffine.ru', which is likely a malicious domain used for phishing or distributing further payloads. No scripts were extracted, but the PDF structure and embedded URI suggest a social engineering attack.

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://traffine.ru/aws?utm_term=abematv+androidtv+apk PDF link annotation
    • https://cdn.sqhk.co/tefulobesa/6mAjvM5/blue_diamond_shoppers_fair.pdfIn PDF document text
    • https://site-1166673.mozfiles.com/files/1166673/jenujebuze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501374/normal_5fc54ec72fd3b.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzomorikat/OrOhfWN/playne_the_meditation_game_android.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/hciggda/isle_of_pines_moneta_va.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420752/normal_5fc30ac993b60.pdfIn PDF document text
    • https://cdn.sqhk.co/meradipuwiz/jjjjjba/37611725427.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/fjf7hb4/67880100980.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/turip/84604637255.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/valavemozalopako.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/henry_ford_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/mofokulopuzetajur.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_off0000c1ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1FF 4212 bytes
SHA-256: d77b22813671c7a85424dc685e783a0cb3f3ad600d3ec02dccb7876f8b4ed697
font_01_sfnt_off0000d0db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0DB 5148 bytes
SHA-256: f2cbde479ff1c496d39a750fc6278998f48451e063c91096e5f286756357c683
font_02_sfnt_off0000e245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE245 9984 bytes
SHA-256: 7a850fa5f3f1c0039d3cf2c1f907a239d45d997089d466dba1fe18ab0c5d4a40