Malicious PDF — malware analysis report

Static analysis result for SHA-256 092466de808ae347…

MALICIOUS

PDF

72.2 KB Created: 2021-02-27 08:50:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6d23b700bc625fc9b7984fd6ae9aea2f SHA-1: 4eb6e9a4bacdfa407b501b249eb79b26fa7522ed SHA-256: 092466de808ae3471fcd702d073654ec76862e7c8004b8412ddbc7ef187f6e90
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://jottigo.ru/123?utm_term=ejemplo+de+memorandum+llamado+de+atencion PDF link annotation
    • https://tukobigerokigab.weebly.com/uploads/1/3/4/6/134653943/036f3af7.pdfIn PDF document text
    • https://gixefizavemo.weebly.com/uploads/1/3/4/1/134108956/549984.pdfIn PDF document text
    • https://notalajamuneno.weebly.com/uploads/1/3/1/3/131378915/pogodugurepikoz.pdfIn PDF document text
    • https://cdn.sqhk.co/nubevitawil/z3Hijic/garifovijasuv.pdfIn PDF document text
    • https://cdn.sqhk.co/nexupumile/Jgj6uGA/love_ringtones_telugu_2020_telugu_download.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/koritixarupixuxekaneter.pdfIn PDF document text
    • https://jaxowukijov.weebly.com/uploads/1/3/0/9/130969500/5e7bbc6da0bbc.pdfIn PDF document text
    • https://ziwolowuwuxux.weebly.com/uploads/1/3/5/3/135321756/bulumadonuxijedifo.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/luxelula/6038156332.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/kefinukibaketorazagaratib.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/alienware_17_r5_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/platform_15_thorpe_park_review.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/isi_web_of_science_author_citation_report.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/redogati.pdfIn PDF document text
    • https://s3.amazonaws.com/nefunupu/arrogante_definicion.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_off0000db68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB68 5076 bytes
SHA-256: 962c8c709b4084d149ac4b8a2475996952ae7d81fae43912caf1104e12e637e1
font_01_sfnt_off0000ec97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC97 11624 bytes
SHA-256: ef287c435bb2cd7a0708b01d552d0a66c5b2e391e1c5f299dcbe320e00c4c73d