Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8708ecb6d9e8f80…

MALICIOUS

PDF

78.0 KB Created: 2020-11-25 11:54:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: df297c42851194b47a07ae542438c5ef SHA-1: c7e2a222abb361145c650f94d36ccfc91a923af7 SHA-256: c8708ecb6d9e8f8022d7d94a38e44b1dceebcbd5aa80bc2121d06bfb7182c90f
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document is identified as malicious by multiple heuristics and a machine learning classifier. It contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the URL https://traffmen.ru/aws. The document's structure and content suggest a phishing or redirection attempt, masquerading as author guidelines to entice clicks.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/aws?utm_term=astrobiology+journal+author+guidelines In PDF document text
    • https://xikigojajutu.weebly.com/uploads/1/3/4/3/134385057/dakak_xuwupajixudi.pdfIn PDF document text
    • https://kinefevemupopit.weebly.com/uploads/1/3/4/6/134631160/gidudag-pozop.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/8502473.pdfIn PDF document text
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/7702792.pdfIn PDF document text
    • https://gupebuxoguwev.weebly.com/uploads/1/3/4/3/134381402/aab312171ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f9b9f917d1b4.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/e63a65f2-324b-43c9-8d9c-b6c8246d71cd/bobatakovodadogotof.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/jevowefuxotubevivuv.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/empyema_thoracis_treatment_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/71619008175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c6c4763-c38f-4631-86aa-3b86ef459df7/boot_system_flash_flash.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/zomaserakidiw.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/nesupidimigijinumu.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_off0000f3a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A6 5396 bytes
SHA-256: bb99d42ed738e1ba34a17f7e22265bddec39d509e282403c2f28746a142874aa
font_01_sfnt_off000105fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105FE 10780 bytes
SHA-256: cb5dbf9b593feb9bda2ab7be80d81821722aca02b4ece16c275688200b39b422

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