Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b0ab8ed99cd3be3…

MALICIOUS

PDF

61.8 KB Created: 2020-11-19 23:32:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 777deb2a70f65ca25315b263385d73ca SHA-1: 199326b9180ab2b836a80818260765ff18277184 SHA-256: 4b0ab8ed99cd3be32a4352d460cb98da56f771187217cb2ebae3f90a771d4bd8
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 pointing to 'trafftec.ru', which is likely part of the phishing lure. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafftec.ru/aws?utm_term=straddle+milling.+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373782/normal_5f92db296b05f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401982/normal_5f9f3769c8beb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5f87665f9002f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4506159/normal_5fb4355f55073.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458824/normal_5faa544565c85.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/harriet_tubman_quotes_and_the_meaning_of_them.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf26ae47-2a1e-420f-b075-976ae00c0175/lanisubekisowafar.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/97946337803.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/juxonefixubu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd30e942-13b2-481f-944a-706b1c7ad534/read_uzumaki_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/aws_ec2_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/jivuparakoromavibo.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/fresh_wind_fresh_fire_by_jim_cymbala.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/underemployment_michigan_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/affinity_designer_crackeado.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_off0000aeb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEB2 1560 bytes
SHA-256: 3ad774f45d0634a7484ccf6d251cc02c168bb57017bb54dca8977b2f3dc7755e
font_01_sfnt_off0000b6b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B0 5316 bytes
SHA-256: 761f163cfc69e5fb83e5df9c2c87604e3f6da93502ca62f5b45f42f4d2f075c3
font_02_sfnt_off0000c8b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8B3 9776 bytes
SHA-256: 7793099d5d271f56dcf0f93dd8c012698384fd1505a322fc6faaad306de42698

Open this report in the interactive analyzer, or submit your own file for analysis.