Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4d68f645975de0…

MALICIOUS

PDF

72.1 KB Created: 2021-02-26 05:39:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5a0fe57dd042c73de04932ba9f7f8bd5 SHA-1: 506af9414ef8fc9b2af7e29fadc07408ce1ad77b SHA-256: 3e4d68f645975de0796938fc9b849b509bdca1badf26c02071264feae3f1d6f0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=north+scott+powerschool PDF link annotation
    • https://cdn.sqhk.co/nivipanevi/5ogjfxs/smithsonian_channel_schedule_uk.pdfIn PDF document text
    • https://getesedalo.weebly.com/uploads/1/3/4/6/134629657/1cf5ff608a31.pdfIn PDF document text
    • https://cdn.sqhk.co/zuwiwejagub/igsggji/rakakakapabafen.pdfIn PDF document text
    • http://sayseedokg.com/373431587925xa20.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/jbyhhgg/weathertech_seat_covers_for_dogs.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/Uib6ihf/radioactive_dating_examples.pdfIn PDF document text
    • https://zuriloteva.weebly.com/uploads/1/3/4/6/134623588/9717376.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422622/normal_5ff0161062ce6.pdfIn PDF document text
    • https://cdn.sqhk.co/jixuvepabu/jiofCPJ/mudding_spa_benefits.pdfIn PDF document text
    • http://dwatches.site/95742684895mfc3e.pdfIn PDF document text
    • http://ujjjrrrrr.space/pigifefatosunozabepr2v0.pdfIn PDF document text
    • https://sokupime.weebly.com/uploads/1/3/3/9/133999930/rotogetano.pdfIn PDF document text
    • https://cdn.sqhk.co/vifutetax/ckWsjgG/texas_longhorns_football_scores_2018.pdfIn PDF document text
    • http://muldwych.com/aircraft_mechanic_mobile_alpq4g7.pdfIn PDF document text
    • https://cdn.sqhk.co/sojowidaz/f0tKvid/twisted_sisters_show_id_channel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406501/normal_5ffe73bb53e5a.pdfIn PDF document text
    • https://misodewegakev.weebly.com/uploads/1/3/4/7/134717908/814bbab1.pdfIn PDF document text
    • https://cdn.sqhk.co/sabiwizi/eieifii/rixiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408863/normal_60223ea01a80c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419441/normal_602ed11ed2c20.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_off0000ddd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD7 4872 bytes
SHA-256: dfae24a6acc7a9f575b02311c5fdee2e98b2f2d624470e7d79dd69f03123534b
font_01_sfnt_off0000ee82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE82 10628 bytes
SHA-256: d39ba3902aa3ccb3cdfdd379555cde708707dbc3a5c01b9ef74e5f6b4377703e

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