Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f3b186edaf050c…

MALICIOUS

PDF

70.6 KB Created: 2021-03-06 12:40:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5d1cb151915e2320ec8cfd37eb67e6e7 SHA-1: 438235d28178f4954df42ecba6433f30b23d71ec SHA-256: d1f3b186edaf050c76aff9fa521f69b0acf808604dc83ddd0c6443c432d3a590
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/wix?keyword=santa+claus+goes+straight+to+the+ghetto PDF link annotation
    • https://cdn.sqhk.co/kibedutej/edheiau/kixilirulasoduf.pdfIn PDF document text
    • https://cdn.sqhk.co/nexetifosam/ephinaG/31301860559.pdfIn PDF document text
    • https://taboxataxenigo.weebly.com/uploads/1/3/4/1/134108556/kudesanidusisuxofe.pdfIn PDF document text
    • https://cdn.sqhk.co/tuminageka/dG1BTo8/assassin_s_creed_identity_apk_file_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dorodidur/7jaaEhj/ben_10_rust_bucket_3.pdfIn PDF document text
    • https://cdn.sqhk.co/kekelivig/ahfJ1zw/lapovaretetagomulize.pdfIn PDF document text
    • https://cdn.sqhk.co/migefareg/ihdxNL4/75309687689.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489429/normal_5fc732de407d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450156/normal_5fe171d196b74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463034/normal_5fd173126633c.pdfIn PDF document text
    • http://resimpub.com/blank_white_tee_shirt_templaterjfml.pdfIn PDF document text
    • http://lavka-karamel.ru/john_deere_145_automatic_price9897w.pdfIn PDF document text
    • https://cdn.sqhk.co/sufipuxifemo/tN8ggQp/polimexajipavijin.pdfIn PDF document text
    • https://cdn.sqhk.co/bugolajoxodu/hajgtHH/fimujupizexaful.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426423/normal_60119f7504cb6.pdfIn PDF document text
    • https://sidugavumudoriz.weebly.com/uploads/1/3/4/9/134902227/fakitagadiz.pdfIn PDF document text
    • https://cdn.sqhk.co/datujisukebe/r1vrvic/24784176123.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464529/normal_5fd1121b28a3f.pdfIn PDF document text
    • http://soinjaga.ru/centurylink_actiontec_c1000a_default_password3r4sz.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/jajoxulabojaso/chale_aana_video_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/91783455213.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/55196976827.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/96970306380.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_off0000d704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD704 5164 bytes
SHA-256: d275f5898d06f2493c6bbe177189013b0c3911a68504a3b1d07ac65c2bae4611
font_01_sfnt_off0000e885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE885 10536 bytes
SHA-256: 965900f1e21ee03f0634e61aebdd166590c2c55032b66665c887558d2e26dff7

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