Malicious PDF — malware analysis report

Static analysis result for SHA-256 229270b7c969ff06…

MALICIOUS

PDF

89.0 KB Created: 2021-03-04 02:10:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6ecc048b5724cb6191b3e15e736296e0 SHA-1: 214597aa7b6a4ef8d2135457a77ea2561d59cda5 SHA-256: 229270b7c969ff064660decc7a32405c94e46d5d7ddd06a7ec22cd33a66116a3
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gimoguvi.ru/wix?keyword=julian+newman+college PDF link annotation
    • http://prognoz-football.club/12663026523bt6u0.pdfIn PDF document text
    • https://cdn.sqhk.co/gopuxipo/jjjcgc7/xesewanalevoribiwavalu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380695/normal_600c45758af66.pdfIn PDF document text
    • https://cdn.sqhk.co/vigamodijek/0ln8q1V/1577776808.pdfIn PDF document text
    • http://gtomishebs.xyz/any_pedicures_open_near_mehu7r6.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/rrjbnhi/63662194121.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446914/normal_5feeb60307afd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501996/normal_603635c8a63c9.pdfIn PDF document text
    • https://cdn.sqhk.co/lovolipeg/bj2JxQM/todo_cuero_chorrera.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382973/normal_5fc5db7173c9b.pdfIn PDF document text
    • http://tevutubiwij.getenjoyment.net/evenflo_maestro_sport_booster_seat.pdfIn PDF document text
    • http://thechambre.xyz/free_printable_may_2018_calendar_templatehw4ul.pdfIn PDF document text
    • https://cdn.sqhk.co/niramojiga/jahjge1/84983211659.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376850/normal_6006b3a4e796e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451369/normal_5fda9578c27e7.pdfIn PDF document text
    • http://reactivaperu-viabcpi.com/lasogegutiwu1zs8.pdfIn PDF document text
    • http://swiss-gear-top.xyz/lefuwiw69p19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422147/normal_602b79d5d7f1f.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_off0001221b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1221B 4928 bytes
SHA-256: 18f8920322926fefc7bc370d9ee80735aded9dd841d94269031db650bbd52c85
font_01_sfnt_off000132ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132EA 10476 bytes
SHA-256: 37ba9ded2613a07a3037d776c44c2769dbe6ad9de633f2cc4ac1bc1a64d705c9

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