Malicious PDF — malware analysis report

Static analysis result for SHA-256 e367e070bb190eb9…

MALICIOUS

PDF

70.0 KB Created: 2021-01-08 00:35:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 24a670b81d5f629707116bba6024eaf7 SHA-1: 7b0e63cf5b29dfc5228e827dfcb72cd5e1405cb5 SHA-256: e367e070bb190eb977226134fcd342aeee0cd157549e643e04c77335ddcabfe2
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 significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. ClamAV detection and ML classification strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffine.ru/123?utm_term=need+for+speed+payback+speedcross+trophy+guide PDF link annotation
    • https://vidijizuv.weebly.com/uploads/1/3/0/7/130776341/saminilola.pdfIn PDF document text
    • https://malolikekex.weebly.com/uploads/1/3/4/7/134718462/vedilabegoparimam.pdfIn PDF document text
    • https://fojaxekixuwid.weebly.com/uploads/1/3/4/7/134743661/litasoduj-movilisux-zenubefiw-dunubamatawa.pdfIn PDF document text
    • https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/ruluvojasexanudup.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/919b674d-aca5-4f4b-8bf5-98f115bceea3/kulewetekilujopomarol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b872b181-0833-4fc4-8895-aac6aaf4ef2c/toxotog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80671848-997f-4113-8b20-7a968b11b5fd/quantitative_risk_analysis_project_management.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/49367339061.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d215bfa-6bba-43a4-b925-8745eab7bbb0/jujasipiwodotira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15135972-2838-4bc7-8095-291fc29adf4b/33805411436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db016af0-256d-40ba-aaca-d5e1dda44a19/kuvokapobemusiwunawokom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e90af31-6b37-45b2-93a7-43474f64edc6/the_fine_art_of_small_talk_debra_fine.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_off0000d19e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19E 5660 bytes
SHA-256: 561eb8d406b55c38a0c236c8a54b22d1b5c93d12fc18d997e22f3330deab2e66
font_01_sfnt_off0000e4ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4ED 11512 bytes
SHA-256: 120d70683cfa1e3d2d964d65dae4d3f42922fc92d20c33a0d0d55aafbcef0df5

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