Malicious PDF — malware analysis report

Static analysis result for SHA-256 421357bcc368d3c8…

MALICIOUS

PDF

69.0 KB Created: 2021-03-04 07:55:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 550bef374554f17923677293bb4c28bb SHA-1: 9d55b7980444b4565db3e5d2cc078ae4903ce100 SHA-256: 421357bcc368d3c82b736a091eb62585ffa339de3c53ff9436eeaa6a69fb1f3e
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://botokaw.ru/wix?keyword=maxwell+library+augusta+ga PDF link annotation
    • https://fitulepam.weebly.com/uploads/1/3/0/8/130874207/1141600.pdfIn PDF document text
    • https://weranatowo.weebly.com/uploads/1/3/1/4/131408071/7099741.pdfIn PDF document text
    • https://xipakopubax.weebly.com/uploads/1/3/5/9/135966228/rabude.pdfIn PDF document text
    • https://guroposuz.weebly.com/uploads/1/3/4/4/134469393/9e8a775c68987d8.pdfIn PDF document text
    • https://sodomolu.weebly.com/uploads/1/3/5/3/135398587/4b8bc52a9b612.pdfIn PDF document text
    • https://xavapijiwo.weebly.com/uploads/1/3/3/9/133997403/802a1bc512.pdfIn PDF document text
    • https://muwalivom.weebly.com/uploads/1/3/2/6/132695892/9032208.pdfIn PDF document text
    • http://xafesuvorolivig.scienceontheweb.net/what_is_the_difference_between_crochet_hooks.pdfIn PDF document text
    • https://burakatotofok.weebly.com/uploads/1/3/1/8/131871829/4773676.pdfIn PDF document text
    • https://fosobezi.weebly.com/uploads/1/3/4/8/134898374/salewaxuzaj_kefexivor.pdfIn PDF document text
    • https://gebekogekikak.weebly.com/uploads/1/3/4/6/134694855/684e3a489b6.pdfIn PDF document text
    • https://zujuwedidikaf.weebly.com/uploads/1/3/4/3/134375258/jasawisod.pdfIn PDF document text
    • https://noxurawikatiner.weebly.com/uploads/1/3/1/1/131163986/5d76bb3.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
    • https://s3.amazonaws.com/wulotugadag/10472839234.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/the_last_airbender_telugu_movie.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c63a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC63A 4928 bytes
SHA-256: 7969e3e797e3c143ca32b4c79f66108467dbcad975d221025f9106197a9cb156
font_01_sfnt_off0000d730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD730 9940 bytes
SHA-256: 4bfbaf5a0b84311fa7a83ed2de010d67d81458806bc6f58ecaec96111a876b6e
font_02_sfnt_off0000f945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF945 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f