Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fe48548f0abd561…

MALICIOUS

PDF

64.2 KB Created: 2020-12-21 23:01:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ae09814eeb949cf5f732722750af1b31 SHA-1: e2a775f5644c0bee7d9c12f527208529ca0113fb SHA-256: 3fe48548f0abd561acc016e2ce2b6c31972b174b0cf1444a165ba18ffd471911
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, including one pointing to 'trafftec.ru' and another to a Weebly subdomain, which are likely used to redirect users to phishing or malware hosting sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further suggests a tactic of using disposable hosting for malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/aws?utm_term=circuit+board+components+pdf PDF link annotation
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/68eef8c4.pdfIn PDF document text
    • https://jerefukixuludew.weebly.com/uploads/1/3/4/6/134686450/sojunafexij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370302/normal_5f9dd7051f7e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421778/normal_5fdc3641c80ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387050/normal_5f9b923aa81e1.pdfIn PDF document text
    • https://mumizajasaliso.weebly.com/uploads/1/3/4/5/134598274/dibuzitile.pdfIn PDF document text
    • https://zijubanefim.weebly.com/uploads/1/3/4/3/134349059/kenalazatijedep.pdfIn PDF document text
    • https://tetikofigutuda.weebly.com/uploads/1/3/4/4/134445118/d45489ac0.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/05fe0797-179f-46f8-9d69-84de67bb3cd5/68028939484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90740ead-5a7f-42a3-977e-b46adf98108d/driving_zone_2_free_download_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54b48ee5-e8e8-465e-8943-306db2bb0112/turuxuminusuzebivewi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b0708651a04751998254/t/5fce32815d2e6f3bda6772a1/1607348866603/change_eye_color_app_download.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_off0000c17d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC17D 5316 bytes
SHA-256: 1bc758a8d6143a97ad2de200bd618aa6219585985454c90dbec2a5f1c2abea80
font_01_sfnt_off0000d36e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36E 9528 bytes
SHA-256: 0cbd3671f3cdfad000b8dab6ecf5bf5f859d49aa49f6a3826d21b03cc0e2e85c

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