Malicious PDF — malware analysis report

Static analysis result for SHA-256 e96afb34ab4304c9…

MALICIOUS

PDF

73.5 KB Created: 2020-11-13 15:28:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 84e9a308108cd7d016c1ce0cd3538d3b SHA-1: b10370ca70b70703246fc7b82421f0570aa3a173 SHA-256: e96afb34ab4304c9f8fcb527a45dbd2996dbb0821e010b411f3070169cb41790
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains a large number of embedded links, many of which point to disposable hosting or known malicious redirectors. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to 'traffine.ru', indicating a potential phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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.
  • 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/strik?utm_term=isaura+dyndns+web+meigas In PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/vinirofevikuni_gonebirorox_degutatabij_jerisitab.pdfIn PDF document text
    • https://dujodorenenap.weebly.com/uploads/1/3/4/4/134488447/c4f94c5515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5f9cc16142263.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449399/normal_5fa63b3aa7c6e.pdfIn PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/5533995.pdfIn PDF document text
    • https://sixojatem.weebly.com/uploads/1/3/4/6/134650300/fb2d6db505.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f9114124bf97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375070/normal_5f8d269af22e7.pdfIn PDF document text
    • https://bepugodaz.weebly.com/uploads/1/3/4/2/134236138/5822507.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/4846395.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/pdf_books_by_rick_joyner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7e4f121-8f4e-4bfd-af47-f9507fdc65c3/45308764358.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc8d5166-d5cf-4e40-b5dc-4b57c63d8984/passion_pit_sleepyhead_mp3_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/betheme_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/tulunuta.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B2 5076 bytes
SHA-256: 11d1157a4119d63362cdac067dfccc46681453546c12f5f7b8fe221f36bbf521
font_01_sfnt_off0000e7d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D5 10428 bytes
SHA-256: 2e3bb545f35d092b90cdbec4c4b718e2d7f4e644878438aca2afa3c016fe7d12
font_02_sfnt_off00010ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD4 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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