Malicious PDF — malware analysis report

Static analysis result for SHA-256 165b9ce0a57be607…

MALICIOUS

PDF

66.5 KB Created: 2021-01-19 20:56:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6b136bbddb0ccf7583b6d46031e048a1 SHA-1: 473d66d319f56100cd8b387a23c9e1f9cebdcf1d SHA-256: 165b9ce0a57be6079f71876297a6277dddb9cf3e3fb252955e1706a8ed3f630e
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://baarspo.ru/wb?keyword=magic%20rampage%20capitulo%202%20fase%203 PDF link annotation
    • https://tolutewegudef.weebly.com/uploads/1/3/4/0/134097468/4547909.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464996/normal_5fbf5ec13df8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365536/normal_5ff51e36a54ca.pdfIn PDF document text
    • https://cdn.sqhk.co/dodamewope/chhidtL/18801979104.pdfIn PDF document text
    • https://rebazizezasij.weebly.com/uploads/1/3/4/5/134586802/gebixovivogaduxa.pdfIn PDF document text
    • https://cdn.sqhk.co/wetabupi/bjh4Bjc/filazigagu.pdfIn PDF document text
    • https://site-1173763.mozfiles.com/files/1173763/guidehouse_grill_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzosexiwugu/gKigOjj/fnaf_2_fan_made_games_on_scratch.pdfIn PDF document text
    • https://site-1244998.mozfiles.com/files/1244998/aahatein_songs_pk.pdfIn PDF document text
    • https://cdn.sqhk.co/pobusafi/ihgjghc/skyblock_ip_bedrock.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/neviwove/niwazagib.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/canon_mg3029_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/amoxicilina_y_alcohol.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/59731818217.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/bachpan_ki_yaade_images.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_off0000c1a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1A6 5636 bytes
SHA-256: 197f35d0f27f3262106f233ad547cb5ed4c390e17e4875f6d5bf5bdc56632b67
font_01_sfnt_off0000d4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D6 11884 bytes
SHA-256: 1e9ab715d080436add66b32bbb3460efb5af54427f855d44baf3fe2731003fbd