Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a89d0e2169f1fc2…

MALICIOUS

PDF

69.0 KB Created: 2021-02-26 00:32:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2aabb1b2a5586815685e59f004281ca0 SHA-1: 62f772d716b531a26256e22f0561fb0be6aae013 SHA-256: 0a89d0e2169f1fc2f0e3e35dbd2efea7cdb05dd9f7c1d6c61e9c41381fe006c3
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/award?keyword=fisher+scientific+isotemp+refrigerator%252Ffreezer PDF link annotation
    • https://cdn.sqhk.co/fonixoligem/CjiKBgi/kamisato_ayaka_genshin.pdfIn PDF document text
    • http://mebel-albero.ru/65066488057vhd5t.pdfIn PDF document text
    • https://cdn.sqhk.co/lewikokezina/dTgguii/janafutir.pdfIn PDF document text
    • https://juviroxekeko.weebly.com/uploads/1/3/5/3/135399696/9802105.pdfIn PDF document text
    • https://jibijuzevigux.weebly.com/uploads/1/3/5/3/135333604/063b657f687.pdfIn PDF document text
    • http://vir-tus.com/clear_activity_log_facebook_androidxljyx.pdfIn PDF document text
    • http://hookup750.website/71177377496faul6.pdfIn PDF document text
    • https://roriwemako.weebly.com/uploads/1/3/4/5/134599113/muvibu.pdfIn PDF document text
    • https://cdn.sqhk.co/rijunawep/9v30u1Q/noleruwuwoduvuvuw.pdfIn PDF document text
    • https://cdn.sqhk.co/bipozipo/jhftfgg/final_fantasy_brave_exvius_esper_lakshmi.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/kibavutibeved/mar_chart_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/char-_broil_gasgrill_performance_440_s_4.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/troy-bilt_riding_mower_blade_removal.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/2102745758.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/present_simple_forme_interrogative_anglais.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/research_grant_proposal_example.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_off0000d0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0EB 5436 bytes
SHA-256: 9eabff729173bf4a8e383576a6acbe4558b743e7c8f92a2a7efd662f787bc20a
font_01_sfnt_off0000e356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE356 10504 bytes
SHA-256: 78859a39293cc48a81333383d938d0702192eab156e42295c372ca3e1282e99a

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