Malicious PDF — malware analysis report

Static analysis result for SHA-256 029ecabe0f1bbdf6…

MALICIOUS

PDF

60.1 KB Created: 2020-11-17 02:41:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5ef4be90303f857fd1ea5095db10163b SHA-1: 127a6958319c4bae9a0d655fc8d18ff0830c878a SHA-256: 029ecabe0f1bbdf6fddbaa700b57194d81cb0fa55f6eb419c0f7c2ecc6797c30
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 0.9996

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
  • 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=1977+camaro+parts PDF link annotation
    • https://xanugobolenaz.weebly.com/uploads/1/3/4/3/134371028/bimusepusol-temowereg-rixed-ferajutonakarag.pdfIn PDF document text
    • https://lewejasolon.weebly.com/uploads/1/3/1/4/131437246/jezokezaviju-kalaz-zuxavenum-burazodukexidav.pdfIn PDF document text
    • https://kukezuleji.weebly.com/uploads/1/3/4/3/134361302/kifiwezixixojup-jepadozo-torisuxolez.pdfIn PDF document text
    • https://siwinapevaz.weebly.com/uploads/1/3/4/3/134338690/9a4f2.pdfIn PDF document text
    • https://poxusesemeli.weebly.com/uploads/1/3/4/4/134462398/raxavavafalorutosa.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/gigiser-gumifalejapigaf-mufeduj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zizene/can_t_stop_singing_covenant_worship_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/verobimetaboxolux.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/3801148815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a0a7a2a-56f9-49c5-b6fe-8e49ed3b8b1c/54959649196.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75f5aa0-aae5-49d7-b3e3-d2b525be55a4/88466992843.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/94221981288.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/tiroruwopafavepu.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_off0000b15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB15C 5240 bytes
SHA-256: f484d67a367ff35e80bbff8254cafa903e41225b04b370e88b4992cebb574a8a
font_01_sfnt_off0000c31f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC31F 9624 bytes
SHA-256: eb46e9c91f6fa0428978cdf5111b34eb6e8e8ec51ae578d922f915d960cffa1e

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