Malicious PDF — malware analysis report

Static analysis result for SHA-256 402e32b78b27e529…

MALICIOUS

PDF

71.0 KB Created: 2021-02-18 01:17:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 46efaf8795feddd1d32bef3f410bb163 SHA-1: 1da1d7f8e691a776c9a0dac02b0cbdd23d25232f SHA-256: 402e32b78b27e529f01e9bdacadc174a1b7a86326d02e2f5f9c675708413fe84
264 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://crophysi.ru/wix?keyword=resident+evil+5+dlc+trophy+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368741/normal_5fda55527baf6.pdfIn PDF document text
    • https://tatemisi.weebly.com/uploads/1/3/4/5/134596356/limazudazagasi-xoriwit-rasugi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367950/normal_5fca56d9d3a04.pdfIn PDF document text
    • https://cdn.sqhk.co/razotefo/jfvHwWo/fm_radio_app_offline_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gukisafuw/iaggihc/16956903540.pdfIn PDF document text
    • https://cdn.sqhk.co/josurowelimu/hcji1ih/sakud.pdfIn PDF document text
    • http://mini-camera-super.club/api_developer_guide_salesforcev5gwo.pdfIn PDF document text
    • http://buytoday.cc/full_hd_1080p_video_converter_freevgfa7.pdfIn PDF document text
    • http://endi-itali.space/311285203659vlgk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392868/normal_5fff6e3b3f295.pdfIn PDF document text
    • https://wojagezut.weebly.com/uploads/1/3/0/7/130775605/164936.pdfIn PDF document text
    • https://cdn.sqhk.co/mavixuwaloz/uifX5ii/82689149962.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/7C4Jihm/hay_day_cheats_2020_deutsch.pdfIn PDF document text
    • http://vinnipoh.space/112380578336uphq.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/iiQjMgf/how_to_become_a_successful_entrepreneur_in_jamaica.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/c6Bgco7/free_computer_lessons_for_seniors.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383566/normal_5fe44161774a1.pdfIn PDF document text
    • https://cdn.sqhk.co/givikufat/Cij1Ajg/wales_online_football_violence.pdfIn PDF document text
    • https://muwikilakejo.weebly.com/uploads/1/3/4/5/134519857/bovuxepu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB93 5300 bytes
SHA-256: 5b9bf9bdebb2bed891677681233582287361d5241e8b76259fd0e1ad417dd736
font_01_sfnt_off0000dda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA0 10256 bytes
SHA-256: ef60c8b9e40fee5b3d364a92639fd0a84588bf9ca208247e2ddfe5a7b0b7bc2e
font_02_sfnt_off000100b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B6 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2