Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba388ca4e35733e9…

MALICIOUS

PDF

71.6 KB Created: 2021-02-14 20:29:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6ef015b41831a7bbff54cf5a84149939 SHA-1: 76429c74ebe5f9a7c4dfdf58401100b4b35fa921 SHA-256: ba388ca4e35733e9302e485d0aad50eb0494acf216971ad7c649625d40b3edc1
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://leonvi.ru/wix?keyword=vertical+and+horizontal+asymptotes+worksheet+with+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485702/normal_5fda743698207.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuzajomugi/hNKhdja/the_floor_is_lava_2.pdfIn PDF document text
    • http://raifaisentgo.online/49614037660ixrxz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405443/normal_5fd673d95d126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425238/normal_600a93816af3d.pdfIn PDF document text
    • http://esmoney.site/baxusafonetatod0z0ej.pdfIn PDF document text
    • https://cdn.sqhk.co/losokifape/SifqYfI/48925414055.pdfIn PDF document text
    • http://easylearning.space/krugmans_economics_for_ap_second_editionrfihp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vemesedesalo.rf.gd/94539021605.pdfIn PDF document text
    • http://xovimed.rf.gd/aladdin_2019_movie_songs_pagalworld.pdfIn PDF document text
    • http://loxosufodu.epizy.com/58661413525.pdfIn PDF document text
    • http://wixilapawatos.epizy.com/lakumetazanufetafuro.pdfIn PDF document text
    • http://lemijafuw.epizy.com/jixavapisusofusavunidivis.pdfIn PDF document text
    • http://lezujepadu.rf.gd/bimewirumamalomovajunote.pdfIn PDF document text
    • http://sokurunofizune.rf.gd/joules_clothing_size_guide.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_off0000d973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD973 5584 bytes
SHA-256: 69b5a4f1c8b853871c82a7da79bd16ba08fc3023864bbe7af93deb41e33b2fe1
font_01_sfnt_off0000ec64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC64 10532 bytes
SHA-256: d9142cd18715ff1cfb7ac28d84c330085dbaa2b59b214f046d1e2aaf3ae63ef8