Malicious PDF — malware analysis report

Static analysis result for SHA-256 496cd98b6a0ba39b…

MALICIOUS

PDF

73.7 KB Created: 2021-02-23 09:19:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0ee84db21afd15169a230d831f0e6740 SHA-1: 60abfe93608edfd2f1b8e57abf96ad89bf68aa7f SHA-256: 496cd98b6a0ba39b98b404f6a805dc2cdef6edb61e374becbf20f9ea91d6a246
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://seumenha.ru/aws?utm_term=what+not+to+eat+on+dash+diet PDF link annotation
    • https://cdn.sqhk.co/gaxomawelej/6hfQPLE/enchanted_learning_spanish_to_english_dictionary.pdfIn PDF document text
    • https://jepukarebav.weebly.com/uploads/1/3/5/3/135321711/ridakez.pdfIn PDF document text
    • http://amin-ukraine.net/on_my_block_cast_spooky_instagrame6mrz.pdfIn PDF document text
    • http://reduslim-italiaoficial.site/xanomaxidubexip675ca.pdfIn PDF document text
    • https://cdn.sqhk.co/verexumifo/Ciegdjh/basketball_shooting_machine_rental_near_me.pdfIn PDF document text
    • https://folutiniku.weebly.com/uploads/1/3/1/8/131871586/romesipetuketiv.pdfIn PDF document text
    • https://pupuzufasu.weebly.com/uploads/1/3/4/7/134759867/d9c366eb68.pdfIn PDF document text
    • https://vadiduriku.weebly.com/uploads/1/3/4/4/134445950/8173599.pdfIn PDF document text
    • http://flowerport.market/51324207814lo8u5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465930/normal_603078653198c.pdfIn PDF document text
    • http://detonic-ordina.website/201706676838bf9a.pdfIn PDF document text
    • https://delazodudiz.weebly.com/uploads/1/3/4/5/134591817/galudumezawamene.pdfIn PDF document text
    • https://tawedituja.weebly.com/uploads/1/3/4/8/134864040/5a287.pdfIn PDF document text
    • https://belibezininu.weebly.com/uploads/1/3/4/8/134850089/tudaresigifo.pdfIn PDF document text
    • https://pepizowa.weebly.com/uploads/1/3/2/7/132711999/velosuperukif.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/xabalaru/22969505368.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/port_authority_bus_gate_information.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/baby_sitters_club_books_7_free.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_off0000e5bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BC 4800 bytes
SHA-256: 148e8c96fbee2be28ac4f615fe73b1f3e83c908031f0519d57b1bf0c8150e4c9
font_01_sfnt_off0000f619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF619 10500 bytes
SHA-256: a1bc5241971799362a37198e3b916a88a6dac25b6a1b0717fb79606647ce3323

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