Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ecb9631c4f0908e…

MALICIOUS

PDF

77.2 KB Created: 2020-12-23 18:40:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: b21189f3e1c2b5ad6b14ffcdb4da3b7e SHA-1: 756819643bcfc2a18f3a7e999416003edf36770d SHA-256: 6ecb9631c4f0908efd9b947d54a7e3547d0edc8e64912c064b6af81df1a5b2b4
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, traffset.ru, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/123?utm_term=5e+swarm+of+insects PDF link annotation
    • https://cdn.sqhk.co/zokasejiz/iiadjfU/pound_cake_cupcake_pan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392218/normal_5f98070d0b9bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/89d62f98-6ec2-4607-a451-b9223836bb0b/django_framework_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f17a0ed1-a75c-406f-b43e-6031450da1fc/que_son_los_desechos_informaticos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fce1d7f6-2ec0-4bb1-b6cc-18cbc469b587/viwedifupigid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0f9b1aa-2ccb-4d5d-b232-72e7530f8e60/hospitality_industry_managerial_acco.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/la_biblia_de_jerusalen_version_1967.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/25281128431.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2df6786-c173-4c84-8cb5-d8fd86c91133/suwosetotevuvovemu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b767bd2-3fb9-4415-b714-d9b9e01c2a1f/vadituruku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a988ad1-409c-413c-b06f-0a7769a513ce/sivijekizikapu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/897ffd93-13ac-4fe4-9e06-8408f8b3dd49/tedirodomelax.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_off0000f19e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19E 5116 bytes
SHA-256: 2becaca7aa9354f5de45cd7156f8f929df660aa974a1881290552de805b89590
font_01_sfnt_off00010307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10307 11012 bytes
SHA-256: aec10de4adde5c2800e338f102ddf26fd7bb3f14170ef13ce41d39b85ffe14d1