Malicious PDF — malware analysis report

Static analysis result for SHA-256 861641329be97229…

MALICIOUS

PDF

62.9 KB Created: 2021-02-17 18:55:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 33df69beb58cf250f8138a52b98c5529 SHA-1: 19db9757603aa82a75a5a975ce54246e555a1e8e SHA-256: 861641329be972292799b04e09a871652d4d684dbdc5991139d548410b3f0946
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=discraft+buzzz+os PDF link annotation
    • http://websecurer.tech/76725311707xeh2w.pdfIn PDF document text
    • http://winwites.space/gexutoxi997v.pdfIn PDF document text
    • https://busedulaxuxelo.weebly.com/uploads/1/3/1/3/131379622/cc78fccfd81.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465024/normal_5ff225ecacd98.pdfIn PDF document text
    • http://ultra0.space/best_shooters_2020_ps499w0w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401703/normal_5fd38bcbd73af.pdfIn PDF document text
    • https://jaxurawutedoma.weebly.com/uploads/1/3/0/7/130739660/9652150.pdfIn PDF document text
    • http://douchehq.xyz/341825413621xlxp.pdfIn PDF document text
    • https://nerutaraludu.weebly.com/uploads/1/3/4/6/134672403/vetinajiju_temopofovim_jozage.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366630/normal_5fccef8051935.pdfIn PDF document text
    • https://siromalad.weebly.com/uploads/1/3/5/3/135312661/sizesaravokesifuwul.pdfIn PDF document text
    • https://mipixapotorifa.weebly.com/uploads/1/3/0/9/130969355/7783408.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/xowasosuf/14467360599.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/44278417275.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/mijagetezuji.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/figusakibu.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/lojorabolegubovupageno.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/11664975419.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/cfop_cross.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_off0000bbf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBF8 5032 bytes
SHA-256: 65e2c08267a0b7d9beadd21056ce379aecfaf1d372e3d133e53f2b36de7c300f
font_01_sfnt_off0000cd32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD32 9980 bytes
SHA-256: 3078a5aa2e939ce874f743ea69ecca77a21fa741c72a315f992c6bc73f8d9acd