Malicious PDF — malware analysis report

Static analysis result for SHA-256 f03c70be6421fa0b…

MALICIOUS

PDF

79.6 KB Created: 2021-06-07 03:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 06b2b3dc4cbea630da8c6f78c2a1dbcb SHA-1: 5891ee8c4b2a4d642a02533ebc98978d5a163b3a SHA-256: f03c70be6421fa0bfab0b6229754f6f74e7485285990a802a44b5954f2496a9c
126 Risk Score

Malware Insights

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

The PDF document contains embedded URLs that lead to external websites, one of which is identified as a potential phishing or malware distribution point. The heuristic 'ML_NYX_PDF_MALICIOUS' and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to downloading updates, aligning with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://drafthe.ru/pbw?utm_term=telecharger+mise+a+jour+parrot+minikit+neo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421354/normal_606891583ec6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466143/normal_6028b900e9056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443803/normal_60262a65b3d00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459467/normal_60bc99a61fcbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528915/normal_603135b9d1f59.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4471690/normal_60b0831af139f.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4426551/normal_60b1556d67909.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457848/normal_602c1b3b0a588.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501356/normal_5fc7c8a73b5b1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pilujibos.pbworks.com/f/how_do_you_unlock_a_sentry_safe_with_a_keypad.pdfIn PDF document text
    • http://namikikis.pbworks.com/w/file/fetch/144751701/super_mario_bros_crossover_android_download.pdfIn PDF document text
    • http://ranetowunose.pbworks.com/w/file/fetch/144637812/algebra_de_baldor_ejercicio_330.pdfIn PDF document text
    • http://xosezoranad.pbworks.com/w/file/fetch/144755601/44425629024.pdfIn PDF document text
    • http://fotikeralo.pbworks.com/f/marantec_m4500_error_codes.pdfIn PDF document text
    • http://wuvebag.pbworks.com/f/diminadafakigu.pdfIn PDF document text
    • http://vulazojab.pbworks.com/f/ferdi_tayfur_yuvasiz_kuslar_filmini_full_izle.pdfIn PDF document text
    • http://jutopar.pbworks.com/w/file/fetch/144627768/37560178779.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd3a5105-a81d-4cb2-a00d-c947f5a9b214/32152185568.pdfIn PDF document text
    • http://betosaxugawi.pbworks.com/f/fegomadoxene.pdfIn PDF document text
    • http://deburajuza.pbworks.com/f/38972825479.pdfIn PDF document text
    • http://mifimoruzuwo.pbworks.com/f/fuxijasoxidekabevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24cfbd7f-af1e-4c9a-b7d1-a9c71df310ca/simple_interest_and_compound_interest_problems_and_solutions_in_tamil.pdfIn PDF document text
    • http://polubisoxuwo.pbworks.com/f/61510202584.pdfIn PDF document text
    • http://pebokuvog.pbworks.com/w/file/fetch/144646626/rainbow_vacuum_parts_diagram.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_off0000f5a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A8 5436 bytes
SHA-256: a9d83a02ade0aaacfd4bc2217ff3b7d7cf6781b2738025a7b559973f12901010
font_01_sfnt_off00010803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10803 12064 bytes
SHA-256: 6ae2b15445667d54a263f06cbdd4ae4e720962582fb3dcad818a423aa50326c0

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