Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cf0af0e90d734dd…

MALICIOUS

PDF

65.1 KB Created: 2021-02-10 14:39:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 66df6c927a20f89c2e10ea07e057b3ab SHA-1: 367b58195f63999684c3fcc2f19a606f8988e4e7 SHA-256: 0cf0af0e90d734ddc4784bd67e6d00ad08975b9d06b02c5e06c2d2cbc4ddae10
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://jottigo.ru/123?utm_term=periodic+trends+practice+problems+answer+key PDF link annotation
    • https://cdn.sqhk.co/tinolaseja/jgoEyRh/jaguar_bohemia_ringtone_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/nXwheiG/guide_and_free_diamonds_for_free_apk_download.pdfIn PDF document text
    • https://fikijumosoliz.weebly.com/uploads/1/3/5/4/135400707/jikarusesotavuja.pdfIn PDF document text
    • https://cdn.sqhk.co/fadejiweruw/clFCgfM/wamerasag.pdfIn PDF document text
    • https://laropavo.weebly.com/uploads/1/3/4/5/134585926/4141984.pdfIn PDF document text
    • https://retorize.weebly.com/uploads/1/3/0/9/130969817/c54d4.pdfIn PDF document text
    • https://tijirurilulade.weebly.com/uploads/1/3/4/3/134312421/3217101.pdfIn PDF document text
    • https://karomigotel.weebly.com/uploads/1/3/5/9/135962203/c5d283.pdfIn PDF document text
    • https://dilukali.weebly.com/uploads/1/3/4/5/134584555/9771828.pdfIn PDF document text
    • https://sixisamut.weebly.com/uploads/1/3/5/3/135308299/xuvum.pdfIn PDF document text
    • https://cdn.sqhk.co/zotevokep/jeAijNJ/fisefizamajober.pdfIn PDF document text
    • https://roviselazadavuw.weebly.com/uploads/1/3/4/0/134040559/120364c737.pdfIn PDF document text
    • https://gigufeti.weebly.com/uploads/1/3/4/6/134633464/vuwavunel-gekajuted-kefota.pdfIn PDF document text
    • https://cdn.sqhk.co/xiladuxe/Icig9ji/tavudunavivenige.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/zalomi/banjara_new_song_dj.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_off0000c261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC261 5620 bytes
SHA-256: fcc014e940359b31c1a26f602743819f5597a5658ce0460a528721df33c70d32
font_01_sfnt_off0000d574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD574 9964 bytes
SHA-256: e8c5d4269a5fd3043b76c5ba05653af962026fc3ab5c7edf6756b36a709cc454