Malicious PDF — malware analysis report

Static analysis result for SHA-256 170425469b81ceb7…

MALICIOUS

PDF

42.6 KB Created: 2020-10-02 07:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 10ff9a0350c71ffb61bab337edae4cc7 SHA-1: e4cf78a3ba1a7314ec0bedeac7ec043131701a2c SHA-256: 170425469b81ceb7bb2daccfd1dd3514117ad0f4cdc77da7cc93727eb4d29f64
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains a large number of embedded links pointing to external PDF documents hosted on numerous disposable domains. The primary URL, 'https://ggtraff.ru/pify?keyword=minecraft+greek+temple+interior', suggests a potential SEO manipulation or traffic redirection scheme. The extensive link farm indicates a malicious intent, likely to distribute further malware or engage in click fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://ggtraff.ru/pify?keyword=minecraft+greek+temple+interior In PDF document text
    • http://moruja.mytangledstories.com/uploads/1/3/1/4/131437229/rubitilo_zozewuvajogu_barenadupufesev.pdfIn PDF document text
    • http://bezetu.hudsonsdairy.com/uploads/1/3/1/4/131408008/69028e1d855da07.pdfIn PDF document text
    • http://gekosibi.krollpatrol.com/uploads/1/3/1/4/131453718/b8b0775643b.pdfIn PDF document text
    • http://files.dogsongabriola.com/uploads/1/3/2/6/132695388/jakixajav.pdfIn PDF document text
    • http://mojabuz.landscapegardenerscamberley.co.uk/uploads/1/3/1/4/131483245/lebajojom.pdfIn PDF document text
    • http://tilonubep.tiltedhaggissoap.com/uploads/1/3/2/8/132814930/kibanikejupaw-zewixogefola-fosuja.pdfIn PDF document text
    • http://xinuwug.blueberrycreek.ca/uploads/1/3/1/3/131383748/paxesa.pdfIn PDF document text
    • http://tifogur.thundercounseling.org/uploads/1/3/0/7/130739415/1140895.pdfIn PDF document text
    • http://files.andreabridgephotography.com/uploads/1/3/2/6/132681647/83298853c.pdfIn PDF document text
    • http://files.scope-for-growth.com/uploads/1/3/0/7/130775952/3e3c641.pdfIn PDF document text
    • http://bilebodip.dragonmoononline.com.au/uploads/1/3/0/8/130814328/6146455.pdfIn PDF document text
    • https://site-1037875.mozfiles.com/files/1037875/sadiga.pdfIn PDF document text
    • https://site-1038530.mozfiles.com/files/1038530/pezarevubegidizit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00006942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6942 5224 bytes
SHA-256: 4b1cee1770fa0bc349622a49009b1cb01e97836655f09b59256df23ae17e554a
font_01_sfnt_off00007b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0B 10184 bytes
SHA-256: e4bfcd663ad8fbdb10393378a13a403d11f29879d28ea7d3a654d015453f5303

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