Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e8ba4abb67189e0…

MALICIOUS

PDF

69.0 KB Created: 2020-11-11 07:30:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 4b86876b51190098e90b535f73ec67c7 SHA-1: b5a4a3fc92df668db487a6d791195ca82eab6999 SHA-256: 9e8ba4abb67189e0c450b0eee3908944225ea5b250e2f21f2a47981bbc9a60eb
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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?keyword=dewalt+dw708+reviews PDF link annotation
    • https://gewaxuselez.weebly.com/uploads/1/3/4/2/134265722/a6e2aeb30.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/149a7514.pdfIn PDF document text
    • https://nepuvaduwixoki.weebly.com/uploads/1/3/4/5/134525355/niwufu.pdfIn PDF document text
    • https://tatazazotogowe.weebly.com/uploads/1/3/4/6/134618267/fexatiwila.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/fa4f4bed-bf41-40a9-be86-583848be71eb/49425354298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66d26acb-52bf-4bb7-9413-14fa7eadf41c/58260711914.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a06f7b2-9b1f-4db5-bade-90e45f8d3e03/500975396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9908e96a-390d-499e-a3d7-a5ab1bd2567a/magic_blooded_template_from_dragon_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8650c37-c3d8-4010-aa35-727b6af686b6/77769081599.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9bc10da-d628-4ea5-8136-b21a9b88dcdd/fun_facts_about_the_canterbury_tales.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_off0000d14f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD14F 5388 bytes
SHA-256: 7fcbe90b3f75607db368c4e029ab0b2f16b381c9d94192bf83c458938800f2d2
font_01_sfnt_off0000e3cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CB 10576 bytes
SHA-256: 7407a8e4cfdda510f0fbb5c8e533cf180657adc02d97605d0c171ac938eda099