Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c2896033a172222…

MALICIOUS

PDF

77.7 KB Created: 2020-12-25 05:09:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 2401461a0a625a9cc42d2e49cc66b00b SHA-1: 9254b4f79191013ae850c1cfc5fbf04ad77d0194 SHA-256: 5c2896033a172222e45f38d7e84e8aed5147e8f5b7e5062a1dd939180b458e46
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=ny+enhanced+license+document+number In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f91fb06ad668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_5fad449ce76dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464311/normal_5fb340f76badf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445338/normal_5fdd29c9ed0e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407571/normal_5f94de1d16d27.pdfIn PDF document text
    • https://jewelilug.weebly.com/uploads/1/3/4/3/134331877/5004b92d8f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390051/normal_5fd3afcaa30d1.pdfIn PDF document text
    • https://puziwifatewir.weebly.com/uploads/1/3/4/7/134715637/50e49eb7eb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465136/normal_5fc273015521f.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://uploads.strikinglycdn.com/files/c68ff65c-4d55-45aa-bced-e897502d530d/nosufofe.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/bluestacks_rooted_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/95805802354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94da70be-6b63-431d-92b4-2c22aca564ae/kegikiwi.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE383 5272 bytes
SHA-256: 719e1e0e154449fe5637f69655440b0373724ff4aa0bff89a83066f8fdb307ae
font_01_sfnt_off0000f538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF538 11236 bytes
SHA-256: 69615ee76725d80694bdfe656941f51d163428e95835fd37495ddf1e3d419c57
font_02_sfnt_off00011bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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