Malicious PDF — malware analysis report

Static analysis result for SHA-256 65c0ae674dd9d62d…

MALICIOUS

PDF

84.1 KB Created: 2021-03-18 23:14:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 1ef8513b67fed9f3285925dc2c9035db SHA-1: 3609ed9cc3cc6dc8cfb59d8497dea0bd8b8b4b75 SHA-256: 65c0ae674dd9d62d9cda36d8de31e84e0c850a3365d8568ae39d539f38e5fc31
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs, with a notable one pointing to 'fokemale.ru', suggesting a phishing or malware distribution lure. The presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate an attempt to redirect users to potentially harmful sites.

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://fokemale.ru/award?keyword=ansible+pdf+tutorial+point PDF link annotation
    • http://figuxovutofid.mygamesonline.org/mobunakazivolejofek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388183/normal_6023d4d02ec54.pdfIn PDF document text
    • http://zovofuti.mygamesonline.org/basics_of_electronics_engineering_ktu.pdfIn PDF document text
    • http://dogalijun.scienceontheweb.net/puwalofajukavijes.pdfIn PDF document text
    • http://mogimetekojubar.scienceontheweb.net/oxford_book_of_cardiology.pdfIn PDF document text
    • https://cdn.sqhk.co/faxinomitux/jhbI2io/dowokizikadave.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417528/normal_6020270f7b96b.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/kHjdhiY/jizepuvefaxamabi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485301/normal_6040b0c275ffa.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/hhgnsja/ocean_rift_aquatics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402944/normal_6024c4eb4e32c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://df6a9abb-74f3-47e1-b359-fe6d1019da36.filesusr.com/ugd/7921d2_3c73d15ad86d40a0affa18df33fdee46.pdf?index=trueIn PDF document text
    • https://de315c38-daa2-4293-b666-e554ba9b7d65.filesusr.com/ugd/564d2e_b1b95dd815954cd3bd9978ac8eb42ddd.pdf?index=trueIn PDF document text
    • http://womawujun.atwebpages.com/movimientos_articulares_del_hombro.pdfIn PDF document text
    • https://ddc7b23b-31e5-4b5c-aaad-d3b7cef26861.filesusr.com/ugd/e506b8_c06947973f124b7891c4098052aa0606.pdf?index=trueIn PDF document text
    • http://novupomajanox.atwebpages.com/80387033253.pdfIn PDF document text
    • https://4868a29a-6d77-448d-a9c5-bc5c6a1713c3.filesusr.com/ugd/060e50_59f0dcb1f13c4e80aeae2ef210f836b1.pdf?index=trueIn PDF document text
    • https://c8d0f166-86fd-441b-8df5-aa5e6c6c7644.filesusr.com/ugd/f4b3af_25d47848e0ea4db7a3a03d9e201e29f8.pdf?index=trueIn PDF document text
    • http://vumamuv.myartsonline.com/loligakirig.pdfIn PDF document text
    • http://bitenozof.atwebpages.com/nikatemabavitanodevu.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_off00010ac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC9 5164 bytes
SHA-256: 2edadbffc87779ad790fd089168658179bc69931a5ac164b6eea760bc6d199fa
font_01_sfnt_off00011c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C62 11360 bytes
SHA-256: e26e7385faab1a4d768b93c07f6aaedd7f0a1a64096c977559b903fa85469782

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