Malicious PDF — malware analysis report

Static analysis result for SHA-256 488c94937618b527…

MALICIOUS

PDF

88.9 KB Created: 2020-12-16 05:16:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7aaae0c2af5de8bdbd849a1d63f44cfd SHA-1: 2cf7eaf515674a9dcf3f689979a8c114413ff18d SHA-256: 488c94937618b52773c83da44d992de28bda6e79e023043d365d45265fc12e2e
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious URL observed is 'https://traffnew.ru/123?utm_term=contemporary+western+philosophy+pdf'. While no scripts were explicitly extracted, the presence of external links and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggest a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffnew.ru/123?utm_term=contemporary+western+philosophy+pdf PDF link annotation
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/jinitorip-bolag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460057/normal_5fa4fb5b08fdd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453129/normal_5fc74f852c498.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386591/normal_5fa6f6f3b520d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385847/normal_5fbd65a08b1d7.pdfIn PDF document text
    • https://runebipunozup.weebly.com/uploads/1/3/1/4/131406604/51cf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f8724ab67df6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372358/normal_5f9b537b3ccd5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444098/normal_5fc64e96be1a2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf10c68bfc5186166a2b7/1606217996865/toyota_prius_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfda4145a8629dc76cb16/1606286756671/chaffey_college_transcripts.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc34a14bda9c57a97cd8cb5/t/5fc84299f97c193540e9684c/1606959769581/first_electric_chair_in_us.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26e6ec1c-70e3-4881-a8c4-7955dab412ad/timepass_marathi_movie_songs.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc371da40f1034a5cb9132c/t/5fc8f9e52197e711ef7fbc9a/1607006693170/rarazuxiro.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd18bf43516d6aa83d90e4/1606228160162/administrative_information_system_examples_in_healthcare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab7a1b7c-862d-4e59-bf74-e863bb814b67/51077284084.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_off00011ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ECB 5380 bytes
SHA-256: 6d81c58f6ae2ba1454536f2ae3d64c6c53f213c6fe88b03341d62ed2374ae3c8
font_01_sfnt_off000130fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130FD 11356 bytes
SHA-256: a8432630b14acf0c984bb121049a41d2d47e0e1a8f06a1ccb6522d4c60ede295

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