Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2fa675c8c2f2c3b…

MALICIOUS

PDF

86.1 KB Created: 2021-05-23 09:22:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 5b807d0362424590de728896b288c230 SHA-1: a4ce2cbb8cce0b37d7a30abc9fd1c75655abedd4 SHA-256: d2fa675c8c2f2c3b085be0018b5d868a3717f4a1bc2715a8b379a1420466b862
126 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing or malware distribution lure. It contains numerous embedded links pointing to external websites, many of which are hosted on disposable domains or link farms, suggesting an attempt to obscure the final destination. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

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
  • 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.
  • 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://jottigo.ru/strik?utm_term=what+is+the+code+for+tmnt+legends PDF link annotation
    • https://webegerux.weebly.com/uploads/1/3/4/7/134759049/6bdbf6e.pdfIn PDF document text
    • https://fipoxojumudex.weebly.com/uploads/1/3/4/6/134649093/gavexumevupawin.pdfIn PDF document text
    • https://nobarolibefo.weebly.com/uploads/1/3/1/4/131407117/94b7c.pdfIn PDF document text
    • https://gifukupuwabe.weebly.com/uploads/1/3/0/7/130775529/pisemozofub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371004/normal_605612065d581.pdfIn PDF document text
    • https://migawireradafus.weebly.com/uploads/1/3/2/6/132695569/fevugirosi.pdfIn PDF document text
    • https://redulexaxoxega.weebly.com/uploads/1/3/0/8/130874010/017dc36.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451027/normal_5fc8ed6f01515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420260/normal_6042cfa9f111f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369909/normal_5fc62bff4babe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463807/normal_5fdd01447fb52.pdfIn PDF document text
    • https://tezifotunojoke.weebly.com/uploads/1/3/0/7/130776805/nepedemifufi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449187/normal_5ff7cb9b5b489.pdfIn PDF document text
    • https://setopotuvojinow.weebly.com/uploads/1/3/4/8/134877086/gijolifoxas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420454/normal_601d923d31710.pdfIn PDF document text
    • https://tidixusega.weebly.com/uploads/1/3/1/3/131380021/7655463.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/xazarujokemus/70399578474.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/89490515912.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/70629441629.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/5477377741.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF935 5448 bytes
SHA-256: 8bed46ec5f293566dcf34e959fb7b620edfa50e0c9a9db88c60e7a0e2c160076
font_01_sfnt_off00010ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA2 11976 bytes
SHA-256: b66c1a8739130ef13b3c88056369b45805db253d2fe8facd718c432b32b87b9d
font_02_sfnt_off0001340c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1340C 16204 bytes
SHA-256: 95f2a8319533f051e584a9e2aa38e8d42f7eb419abe795cf0dce2d6390e2c0a0

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