Malicious PDF — malware analysis report

Static analysis result for SHA-256 031855279d57cab7…

MALICIOUS

PDF

73.4 KB Created: 2021-02-25 08:53:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c07e16844de29142e26a5b9c0252a1ae SHA-1: 65052061a2b9fa47bb15e0c3efe3306f4ef87ea4 SHA-256: 031855279d57cab7a53afbad7bfa40f2b2d9f9518e04bc06393e0f3522cb02d1
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://maypoin.ru/wix?keyword=romanian+ak47+wood+furniture PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469834/normal_601f2bad7c79d.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/iciijig/rapunzel_barbie_movie_online.pdfIn PDF document text
    • https://cdn.sqhk.co/tavanaru/yhahaDm/life_after_death_quotes_hinduism.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502833/normal_603136b271f37.pdfIn PDF document text
    • http://vwwv-avito.online/mississippi_drivers_permit_test_bookletjkz1v.pdfIn PDF document text
    • https://tonavamajarow.weebly.com/uploads/1/3/4/6/134694337/3676940.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425235/normal_5fec836e75f08.pdfIn PDF document text
    • http://navalny.design/journey_to_the_west_conquering_the_demons_strike_back_caste32i7.pdfIn PDF document text
    • https://geguxawuxereko.weebly.com/uploads/1/3/1/3/131379712/81b3ee1b69e4e6.pdfIn PDF document text
    • http://stikc.xyz/kick_the_buddy_game_download_apkv1pp2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393644/normal_5fd82fe648b92.pdfIn PDF document text
    • https://cdn.sqhk.co/naketego/cZOjdhd/54680753514.pdfIn PDF document text
    • https://cdn.sqhk.co/guxifunuris/chf7fVC/62276430599.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/hglhhjj/amazon_driver_jobs_pay_rate.pdfIn PDF document text
    • https://buranujepexu.weebly.com/uploads/1/3/4/3/134339299/povamisasumar-fikux-nevibare-letatilefatub.pdfIn PDF document text
    • http://frukt.fun/kitexaxifonagenebixonujtwizj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://topawod.epizy.com/beauty_girl_game.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/makerere_university_application_forms.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_off0000e229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE229 5172 bytes
SHA-256: 827f226482ebc30a6366ee11a3e6e5fdc1844ffbc05aa0713b526d8e81e6d93d
font_01_sfnt_off0000f3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D7 10872 bytes
SHA-256: 2692940991cd2e70c071b4a49bf1ee1e84ce1f275d5bd323bf78c2b831bddc38