Malicious PDF — malware analysis report

Static analysis result for SHA-256 88dc0246d70897bf…

MALICIOUS

PDF

77.7 KB Created: 2020-12-31 17:53:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b7e3660e249e2cce35dcdb28f8202677 SHA-1: d6aabca9d9de7718a57b2bd769ebe3eaefd88260 SHA-256: 88dc0246d70897bfee7bb6ab08e53c16527af834f4e582e8eee16c130290b7c9
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to 'trafffi.ru', which is likely a malicious domain used for phishing or distributing further payloads. The document body, though heavily obfuscated, suggests a lure related to 'cargo carrier with ramp for snowblower'. No scripts were extracted, but the PDF structure and embedded URI strongly suggest a malicious intent to redirect users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://trafffi.ru/123?utm_term=cargo+carrier+with+ramp+for+snowblower PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379030/normal_5fc8ae264baec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484356/normal_5fe648715710f.pdfIn PDF document text
    • https://tigisara.weebly.com/uploads/1/3/4/6/134651617/telotuvote-jezawo-gefetij.pdfIn PDF document text
    • https://lokaxanexu.weebly.com/uploads/1/3/4/6/134638146/muxinivuw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366031/normal_5fdf04f96046e.pdfIn PDF document text
    • https://tijujuvuxerupuz.weebly.com/uploads/1/3/4/2/134236121/buwexujej.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417429/normal_5fe10094d9399.pdfIn PDF document text
    • https://roxowuvunesoneb.weebly.com/uploads/1/3/4/8/134889799/50a4762.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/firudegix/dubasotinererozakotekom.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/equilateral_triangle_problems_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ecd0c66-abf3-481c-bb99-f630e8bfa0b4/71740972130.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_off0000e393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE393 5472 bytes
SHA-256: c7bffc940a1680497d0b56d8662bd3fd68cf81088217ed05d6d3f05d4ee8c9ec
font_01_sfnt_off0000f61b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61B 10948 bytes
SHA-256: f86177acc47a72cb3cf834beb4f04a0bac51b486151f6bd1f7d475e8acce9b48
font_02_sfnt_off00011b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B99 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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