Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e23c6604f8ca43…

MALICIOUS

PDF

61.2 KB Created: 2021-02-04 00:10:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0110bec731c3fdd381159984933f6aaa SHA-1: 909e84f76b1382c7a3a2082fd2a2ee201aa803cb SHA-256: 89e23c6604f8ca430d035d264d28dadc0658a0e3459c7bd69d3c006f52134e65
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=graph+of+tan+x+is+discontinuous+at PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4476943/normal_5fe182382b138.pdfIn PDF document text
    • https://dofolemabumef.weebly.com/uploads/1/3/4/4/134458616/4106805.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486772/normal_5fc91d0c6cea8.pdfIn PDF document text
    • https://furimulu.weebly.com/uploads/1/3/1/4/131411024/ronenobetok_zenokuvunizopow_jawapalebibor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380531/normal_601a7f1349ad2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390638/normal_5ffaa66c8a40a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447906/normal_60021a404edc0.pdfIn PDF document text
    • https://nopubogap.weebly.com/uploads/1/3/4/6/134667077/747d946a392e963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391623/normal_5fd3772d3a639.pdfIn PDF document text
    • https://cdn.sqhk.co/nabixisaf/ghhcjjf/69720735185.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/fuvidokibet/switch_games_while_playing.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/terminator_salvation_full_movie_480p.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/academic_research_proposal_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/naxewoxivuxugovowemimekew.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/jubukubulokimalenarodezu.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_off0000b525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB525 5308 bytes
SHA-256: 863397e4f596d709c1d9475c6d78631b69ff99279bb336f099808793606ef767
font_01_sfnt_off0000c738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC738 9524 bytes
SHA-256: 376cf5b78c2468930a9b5950a07bb58d5854eeef225bf4e149613e8a552c2d6f

Open this report in the interactive analyzer, or submit your own file for analysis.