Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c3c7ee703329bfd…

MALICIOUS

PDF

69.1 KB Created: 2021-02-10 14:22:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 62fab6eadd87ddf03cc4ad6a51716166 SHA-1: 8133d1461681f0102e33ea944a083a393a7e6e96 SHA-256: 0c3c7ee703329bfd34b8feef5a2fd99aaae0f719596f0dd75d41d96e8b9d6243
196 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.
  • 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://jacksth.ru/123?utm_term=my+dream+room+worksheet PDF link annotation
    • http://wirodapupoz.iblogger.org/65208645786.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444356/normal_5fc6f1c5d4870.pdfIn PDF document text
    • https://faluwesidiji.weebly.com/uploads/1/3/0/7/130738597/buvibonenetivolesixe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492253/normal_6023b50293419.pdfIn PDF document text
    • https://kajipeluvo.weebly.com/uploads/1/3/4/3/134318391/wizavamosizawa_xuvevolirilike.pdfIn PDF document text
    • https://kikizesojumare.weebly.com/uploads/1/3/4/7/134718780/6859106.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411944/normal_6007dc9835779.pdfIn PDF document text
    • https://xopavomubikun.weebly.com/uploads/1/3/4/8/134879687/8590708.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/vobuturinivi/bejafiziwobax.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/semiconductor_optical_amplifiers_connelly.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/63955911387.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/nokiwawitonatolapozed.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/14973576851.pdfIn PDF document text
    • http://taperimogitunal.epizy.com/europa_league_final_match_report.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/incidente_campoformido_ieri.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/marked_by_king_bs_ashton_answers.pdfIn PDF document text
    • http://potopaf.epizy.com/117_bus_timetable.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/69417997713.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_off0000d0d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D2 5296 bytes
SHA-256: 8cdf72d94fa559ab4748546eed40ed55b375d22214052937bdf30e078636eff5
font_01_sfnt_off0000e2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CA 10372 bytes
SHA-256: 4b53ca1cfd573fb54e7b97b492b0ea74ffa19a5e21b885dba844c8f5854d4dd3