Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a54c447a320739b…

MALICIOUS

PDF

68.1 KB Created: 2021-02-28 12:26:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8aae6debb9e8d2887ad249f7efddf93b SHA-1: 68b82749c0a93f2f9f71a35e7bc93da66b654842 SHA-256: 6a54c447a320739bc8bc98fc7e19893b560cd4ace9ebca666c8bea4a093694a5
186 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.
  • 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://nipisod.ru/award?keyword=harga+tv+led+panasonic+viera+42+inch+sharp PDF link annotation
    • https://cdn.sqhk.co/petawelesup/ADNjbbh/11677773245.pdfIn PDF document text
    • https://dajukufatob.weebly.com/uploads/1/3/4/3/134345308/mezigup.pdfIn PDF document text
    • http://shoop-ff.ru/763257833809vtpm.pdfIn PDF document text
    • https://cdn.sqhk.co/buxifuludo/iiejagi/indeed_job_search_in_bangalore.pdfIn PDF document text
    • https://mibirewisurux.weebly.com/uploads/1/3/5/3/135313447/fepipir.pdfIn PDF document text
    • http://nasporte1.fun/17060583028q1aso.pdfIn PDF document text
    • https://zugozoriv.weebly.com/uploads/1/3/4/7/134770463/1670392.pdfIn PDF document text
    • https://cdn.sqhk.co/gigijuke/Is8hfhc/all_eight_planets_in_order_from_the_sun.pdfIn PDF document text
    • https://cdn.sqhk.co/wexunaveb/1gi4sjd/high_school_soccer_kickoff_rules.pdfIn PDF document text
    • https://cdn.sqhk.co/dubutemaruxu/2bdjwgc/download_toca_mystery_house_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/AdajeN4/chickens_for_sale_in_northwest_arkansas.pdfIn PDF document text
    • http://gatowixipeba.mywebcommunity.org/what_is_the_average_soldier_salary.pdfIn PDF document text
    • http://hempmap.ru/dopesorago5lcg.pdfIn PDF document text
    • https://kuvikupomudu.weebly.com/uploads/1/3/4/4/134457818/1fbf42451.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/kifutizijebuj/java_apps_free.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_off0000c553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC553 5576 bytes
SHA-256: bc902e1f269446a79b443a729565f53c09811b0fbaf5d5abd834e658b34a89ec
font_01_sfnt_off0000d851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD851 13800 bytes
SHA-256: f7499056f2b074eb06e1913a255caa3385c0d46b73554c67e4010869723e425c