Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3e292416e4c3294…

MALICIOUS

PDF

70.8 KB Created: 2021-02-27 21:11:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 12235c1ae9e871bf053f4e4a15534923 SHA-1: 05c86447b6d42d649de84427db121ba369d6ea2e SHA-256: a3e292416e4c3294b203b48ea60f2226ba1010408b3ee68976555194e5b8274b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://maypoin.ru/award?keyword=how+to+reset+black+and+decker+bread+maker PDF link annotation
    • https://pagopejej.weebly.com/uploads/1/3/5/3/135315805/480ded75a84.pdfIn PDF document text
    • https://cdn.sqhk.co/kosenopelid/ghgcgei/nfl_network_on_spectrum_channel.pdfIn PDF document text
    • http://nenegifivujaxu.mypressonline.com/does_the_keurig_2.0_k500_have_a_water_filter.pdfIn PDF document text
    • http://kamikofonem.mygamesonline.org/vosadonulojotuzozuzo.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/gjhgTG4/87829669777.pdfIn PDF document text
    • https://nonexivibofopuv.weebly.com/uploads/1/3/4/6/134603010/3ce2887.pdfIn PDF document text
    • https://cdn.sqhk.co/vivepovugeli/ccgjiWI/nufijanokaxedu.pdfIn PDF document text
    • https://cdn.sqhk.co/ponigubik/H4hagjJ/origami_heart_envelope_box_step_by_step.pdfIn PDF document text
    • http://bimoriz.getenjoyment.net/the_little_book_of_valuation_damodaran.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502567/normal_5ff5ae0b597ae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dufojamimusim.atwebpages.com/23676531798.pdfIn PDF document text
    • http://lumosaneja.onlinewebshop.net/what_is_the_characteristics_of_an_argumentative_essay.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_off0000d864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD864 5344 bytes
SHA-256: db688da79d9f1e92fa0d9ae4ea88d67cd0911fdc00da17761055b4af560c6c59
font_01_sfnt_off0000ea83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA83 10524 bytes
SHA-256: 8ee3e45ae0fb4aadc758b88fa385b1841f893cb19dedde37572314bd71da61bf