Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae61b96797d585d…

MALICIOUS

PDF

60.9 KB Created: 2020-11-11 19:13:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 0f0d1192377f8f4fc11b084640acc681 SHA-1: 12ae415a64ef05a537c22dd482a79209f682cc92 SHA-256: eae61b96797d585d6ef9105345fc72a7c5be8d220ab6f321ff46d6a33016f712
244 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier, indicating it likely serves as a phishing or redirector lure. The document contains a large number of embedded links, many pointing to disposable hosting services and redirector infrastructure, suggesting a link farm designed to distribute malicious content or phish users. The presence of a link to 'traffine.ru' further supports the redirector hypothesis.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=m%25C3%25BCsl%25C3%25BCm+izle+indir In PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/gelifi-jalito-pumunujaz-toferij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405929/normal_5f9a26761ef04.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/2531199.pdfIn PDF document text
    • https://tetavezodumop.weebly.com/uploads/1/3/4/6/134645623/jurur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374533/normal_5f949603683cb.pdfIn PDF document text
    • https://tevumusavobe.weebly.com/uploads/1/3/4/1/134108657/kotusokozej_pimup.pdfIn PDF document text
    • https://pisekubil.weebly.com/uploads/1/3/4/3/134322001/5385618.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366316/normal_5f920d0f5d503.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/vubadevudi.pdfIn PDF document text
    • https://wiwusazefaxowo.weebly.com/uploads/1/3/4/4/134457051/2911537.pdfIn PDF document text
    • https://jopalezaleloloj.weebly.com/uploads/1/3/1/3/131380469/tudugipapafax.pdfIn PDF document text
    • https://wekowemawifov.weebly.com/uploads/1/3/4/2/134266616/8298704.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/65735933-be8c-4ab3-a800-481c57e2409f/quality_control_forms_and_checklists.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/rodoxowebaxelebaganibof.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/lawugegomex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8af8a04f-c4aa-4dae-af55-60fcc196fae6/21688569765.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_off0000af5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF5E 4936 bytes
SHA-256: 976fe4a2da7a1dea42cf6d2a0cf1c2cc8865ebbe70fd4c85f0de172ca2b15b4b
font_01_sfnt_off0000bfeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFEB 12020 bytes
SHA-256: cd97f99667e078f8515b5594fd56db6f47b81a2aa3bd1b0ef6c7434c8a2410dd

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