Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8567559675dffca…

MALICIOUS

PDF

72.8 KB Created: 2021-02-25 00:10:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2230ea74f6be93ef42934b0991f6636e SHA-1: c6cbc2c89cf411d549ee1246412146bc25f0eefd SHA-256: f8567559675dffca1ba33b4629edd91cf82293daf6457f0f60c4e16822158148
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://druttle.ru/award?keyword=how+to+change+txv+valve PDF link annotation
    • http://saxobupazes.sportsontheweb.net/55686559388.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/gomofajutibubaf.pdfIn PDF document text
    • https://wuzovogupo.weebly.com/uploads/1/3/4/7/134720757/6180950.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453129/normal_5fc74ee8eff43.pdfIn PDF document text
    • https://kelodopaseku.weebly.com/uploads/1/3/1/4/131406239/bd27aeb8e3.pdfIn PDF document text
    • http://roxelejabojafe.scienceontheweb.net/mpow_smart_bracelet_instructions.pdfIn PDF document text
    • https://nidikibadut.weebly.com/uploads/1/3/1/4/131453007/derilel-perotojazo-zojiwamikokivaj.pdfIn PDF document text
    • https://gupapuna.weebly.com/uploads/1/3/4/7/134726568/durejejez.pdfIn PDF document text
    • http://mapimiz.22web.org/messenger_lite_apk_version_2._2.pdfIn PDF document text
    • https://jufavufopu.weebly.com/uploads/1/3/4/3/134340263/vozuxarusiw.pdfIn PDF document text
    • https://misirukizos.weebly.com/uploads/1/3/4/0/134017349/kiruwiwuzolidizojepa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416149/normal_6015ffdcb2cfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458394/normal_60270a619c702.pdfIn PDF document text
    • https://lumigoxodavi.weebly.com/uploads/1/3/1/6/131606620/a1d3aa1.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/redegelesibif/5478845939.pdfIn PDF document text
    • http://wadoromutisagar.myartsonline.com/what_is_the_role_or_job_of_an_organism_in_an_ecosystem.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/bushmaster_carbon_15_spec_sheet.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_off0000e21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21A 4968 bytes
SHA-256: e3ee87658c352e143c8aa2f90eaed3279390f957f3f502099be54b198402bf56
font_01_sfnt_off0000f31e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31E 10248 bytes
SHA-256: 556a53b69570f6cddf74acb758d36c3dc41faf2413f65a8cac03a6cc1911af49

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