Malicious PDF — malware analysis report

Static analysis result for SHA-256 c884c964aa94d3fa…

MALICIOUS

PDF

63.1 KB Created: 2020-12-14 15:44:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b0097e9fde74cc69b33d95de4ea59359 SHA-1: 731d1519caf953d903de8e3e64aa810579e56c3d SHA-256: c884c964aa94d3fa394ea42cbd3a5f5b5aee7ef35524c0eb388c12d4a1708ad9
184 Risk Score

Malware Insights

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

The sample is a PDF document flagged by multiple heuristics as malicious, including a critical finding for redirector links. The embedded URL 'https://traffine.ru/123?utm_term=latin+american+city+model' is identified as a known malicious redirector. The document body is heavily obfuscated, but the presence of numerous links suggests a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure itself is leveraged for malicious redirection.

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 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/123?utm_term=latin+american+city+model In PDF document text
    • https://foregizof.weebly.com/uploads/1/3/4/8/134890581/5ffb9c12889.pdfIn PDF document text
    • https://fejiwapofiji.weebly.com/uploads/1/3/4/6/134699364/fowedebesuxaj.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/1a27643b41869.pdfIn PDF document text
    • https://pujazoja.weebly.com/uploads/1/3/4/8/134880569/xoroleveveduduw.pdfIn PDF document text
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/eff1201bb52d3b.pdfIn PDF document text
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/pemela-gilipegamelanil.pdfIn PDF document text
    • https://xekawipafamut.weebly.com/uploads/1/3/4/3/134328312/fenelujafen-suniju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fce537dbb7ea8683c984f04/t/5fd06556281783041121d2fd/1607492956280/idle_transformation_mermaid.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6c3d4e98326c02091f71/1606380608820/mopopi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc36b9bcd1e280355e43c7b/t/5fca95c8222353306a935e61/1607112139744/jowofupuzizageje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19226aff-ebd1-451f-8489-2c0ccd287637/wow_macro_guide_classic.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e9eb3398ff75152e2002/t/5fc1ccbd145a8629dcf33c4c/1606536382486/24135525026.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5057acc0-f3cd-4a05-a6c3-62cbbb28b8f7/gaziwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/124eb973-64e8-452f-ba4d-55762ea40030/55388610757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe8fb64e-7dc3-4fc9-ac3e-c963aca3b6a2/fivem.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_off0000bf1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF1C 4948 bytes
SHA-256: bd7b53038038f89a789980a422883c11aae1bc6a026e257ae382ab8ac53c87cd
font_01_sfnt_off0000cfe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE5 9376 bytes
SHA-256: ba91e36fd285b1d80859d8eaadff0ff3a579994974b6446c7bb172f00bf2eb63

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