Malicious PDF — malware analysis report

Static analysis result for SHA-256 26dcc45814199d94…

MALICIOUS

PDF

72.3 KB Created: 2020-11-20 05:05:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fcd46429118a30e3dd5d26f921da4d48 SHA-1: 296c0100550fba637e63b245af8bf2df9a8f707c SHA-256: 26dcc45814199d9496894a0f9c4dc9ef15bd5806cf281b4f138ab8676ab3cae4
156 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. 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/strik?utm_term=mary+kay+miracle+set+price PDF link annotation
    • https://mobojifukan.weebly.com/uploads/1/3/4/6/134688158/muraw-vabesotatumi.pdfIn PDF document text
    • https://foragiluk.weebly.com/uploads/1/3/4/3/134374590/bigemukaripi.pdfIn PDF document text
    • https://rawudirujitasep.weebly.com/uploads/1/3/4/5/134588445/9494122.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501484/normal_5fb273680960c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426422/normal_5fa9661715e4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376096/normal_5f91bde212230.pdfIn PDF document text
    • https://rurasudi.weebly.com/uploads/1/3/4/4/134485231/5409543.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419192/normal_5fa0610939eb6.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/b6e46f69-105c-4564-8463-3fc23cf06e11/tempstar_dc90_parts_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2824a3b-b21e-470b-9fdc-20a421ff4ae6/ruratolowunixi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/528655f5-2bf4-4a75-a5b3-e9a2fd3e1dab/future_floor_polish_walmart.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 8

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_off0000cff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF1 4820 bytes
SHA-256: d5eb0469898ca338450638a4f5b5e6e5a793f22cf7e969930b8d1a44badd2070
font_01_sfnt_off0000e061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE061 11120 bytes
SHA-256: 9ebb77052b43acddd2c20b1e2445c3e2392aa590f2d90c07f28a982f5b179385
font_02_sfnt_off0001063f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1063F 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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