Malicious PDF — malware analysis report

Static analysis result for SHA-256 95bc0915771e51b7…

MALICIOUS

PDF

48.9 KB Created: 2020-10-28 00:57:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 5f1e901b639c73818300ccecad32402d SHA-1: 0ae15ca252b0d0051544ec6015eca29e4c5611d7 SHA-256: 95bc0915771e51b781d11deb519d35bedf0172fe7e352abf711681c38eab36ac
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.link/pify?keyword=case+western+tuition+room+and+board In PDF document text
    • https://kawigijutugin.weebly.com/uploads/1/3/4/3/134351661/c1e61d3d360e1.pdfIn PDF document text
    • https://wojeribexojuxu.weebly.com/uploads/1/3/1/8/131856158/vedunu.pdfIn PDF document text
    • https://gerexogevi.weebly.com/uploads/1/3/4/4/134463414/zutopiwugetopenumu.pdfIn PDF document text
    • https://zavamemedu.weebly.com/uploads/1/3/4/3/134305249/8cd723ee2.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/duwanudek.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/7716686.pdfIn PDF document text
    • https://nebomigefut.weebly.com/uploads/1/3/4/3/134359696/7927206.pdfIn PDF document text
    • https://rixokofumi.weebly.com/uploads/1/3/1/3/131380985/1156c2d70.pdfIn PDF document text
    • https://bulavanu.weebly.com/uploads/1/3/4/3/134341337/silowuj_tolosime_nosulovume_barovizaf.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/pipepotafepefe.pdfIn PDF document text
    • https://petugureb.weebly.com/uploads/1/3/4/4/134445868/3144274.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/leniniwugezabesobe.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/gowozizememefi_golotetezel_kuratibipupi_desal.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/sabarufodij_runedixabubofed_mijukad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/92b10302-31ff-4f8d-8e29-54c5afb033cd/47178179293.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5143b91-b740-4abd-9099-c3c0dbdcf0b0/30729080193.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a59b9cf-b13d-4fb9-a12d-b2714de3e025/97657269169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7212166d-a637-4a5e-b6a7-85f8ef1b0bcd/75938174319.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa6f3b18-6c33-4244-bf53-31b1a126c201/59362678426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2178013-30f2-4500-91b9-9f4891f4c251/64263338581.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000706d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706D 5076 bytes
SHA-256: 77501a28af3400dd6103a7815c65037272909cb3dc0597b61d72be0bdac52be3
font_01_sfnt_off0000819a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x819A 11884 bytes
SHA-256: 53b4621e04d54296fa32137dd0d0570ceab43e0cc011f408a8606caf46172c5f
font_02_sfnt_off0000a7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7EC 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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