Malicious PDF — malware analysis report

Static analysis result for SHA-256 41808c0ba90ed205…

MALICIOUS

PDF

71.1 KB Created: 2021-02-27 07:09:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a7294edf7e61fa8b075a949f7b0f5ee3 SHA-1: 935c2cc456d8ed4d4ad13f98e978f97933878625 SHA-256: 41808c0ba90ed20526613848c97b1237b625c2ca4aeb78f09964a5b41f43e84b
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://jumiwimov.ru/wix?keyword=the+man+of+the+crowd+commonlit+answers PDF link annotation
    • https://givepatodanino.weebly.com/uploads/1/3/6/0/136097232/nabonipezedo.pdfIn PDF document text
    • https://tuwebuliwarukor.weebly.com/uploads/1/3/5/4/135400964/relusixapikafifije.pdfIn PDF document text
    • https://fulopovesaj.weebly.com/uploads/1/3/0/7/130740112/nufimovavi-xemewida-gezuwugenejili-vexerevawopavib.pdfIn PDF document text
    • https://cdn.sqhk.co/gulanuwe/KLggdhj/zexikufiguzuj.pdfIn PDF document text
    • https://zojegidaluvimov.weebly.com/uploads/1/3/4/1/134109086/mikif-wotar.pdfIn PDF document text
    • https://cdn.sqhk.co/paxajirawegu/SPRiKvU/iq_flipper_knife_uk.pdfIn PDF document text
    • https://laxumobunutag.weebly.com/uploads/1/3/4/0/134017566/wetukanosomeluxaj.pdfIn PDF document text
    • https://cdn.sqhk.co/bezakebijuk/IQUihih/verotep.pdfIn PDF document text
    • https://cdn.sqhk.co/benanejufa/dwhcYjg/bucket_list_definition_simple.pdfIn PDF document text
    • https://cdn.sqhk.co/gidulikegel/fjfBLEf/87781043771.pdfIn PDF document text
    • https://wesuzimowigimeb.weebly.com/uploads/1/3/4/7/134745326/bekiraxijub.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinirumawe/aggpTOm/48922296724.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/nazekisigiduz/troy_bilt_5500_generator_oil_change.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/manualidades_navideas_con_discos_cd.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_off0000da56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA56 5304 bytes
SHA-256: d909af3871ed5dfe7616c23ff119b92065551d340f22e5a8060a109056de6e43
font_01_sfnt_off0000ec44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC44 10324 bytes
SHA-256: 7692b56cfc7c0cf7f28934812ae950927387f8facb6513e043a898108174a64c