Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6bde49a0d2e778d…

MALICIOUS

PDF

79.8 KB Created: 2020-11-26 06:18:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 15b2ec0cb32dbef716241b53940043df SHA-1: 209aa97a5f1af5e6d4efaa9df56fc0b296b97a1b SHA-256: f6bde49a0d2e778d00c3a51a930c4f1370f4bf8189d3888501146ae684e906b2
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 0.9998

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=electron+configuration+chart PDF link annotation
    • https://lukafove.weebly.com/uploads/1/3/4/6/134655473/5621556.pdfIn PDF document text
    • https://wasumorupukefu.weebly.com/uploads/1/3/4/5/134581702/zanuwawategor.pdfIn PDF document text
    • https://dezusopivelisuk.weebly.com/uploads/1/3/4/7/134734284/wegazigodifujid_wutopul_refupoj.pdfIn PDF document text
    • https://fapezadedafax.weebly.com/uploads/1/3/4/6/134609176/3052013.pdfIn PDF document text
    • https://wavupuzubeje.weebly.com/uploads/1/3/4/2/134235525/70cb45ea.pdfIn PDF document text
    • https://gunarolapikomi.weebly.com/uploads/1/3/4/4/134442839/6793659.pdfIn PDF document text
    • https://kotimoxita.weebly.com/uploads/1/3/4/8/134878992/8019446.pdfIn PDF document text
    • https://sowuwiwegekop.weebly.com/uploads/1/3/4/4/134444151/ce697e4647.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/bevekizadoxuj/narevadovabasowojovibi.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/unblocked_games_snake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da7ba361-e381-48ce-983b-97388929d9e6/dafunapomagurodazukom.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/chevy_traverse_2014_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/63801008769.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/dixavewol.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_off0000fbde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDE 4920 bytes
SHA-256: 45ee71a578b4704f73fab11c5a418d87918c0d6f590d56d6ce1441e58c6c9369
font_01_sfnt_off00010c9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C9D 10964 bytes
SHA-256: 10b41c7d92416b1a6985d5956d1e709e914a3850be8a33064d291d922287c66f

Open this report in the interactive analyzer, or submit your own file for analysis.