Malicious PDF — malware analysis report

Static analysis result for SHA-256 60379df38906c0bd…

MALICIOUS

PDF

46.6 KB Created: 2020-11-07 10:22:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: d9a65bcbe72964e22fbc76991bb97b4b SHA-1: e7b65f2505be990bdb6aae996e2f5eca70906efd SHA-256: 60379df38906c0bd3fa1c5cadb7d8adb41661b37325733524e423f56918d2799
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://traffset.ru/123?keyword=soundcloud+mod+apk+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f95f5c7b00a1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://xepaxaw.files.wordpress.com/2020/11/eliseu_martins_contabilidade.pdfIn PDF document text
    • https://petivubeso.files.wordpress.com/2020/11/rukadomodobubixe.pdfIn PDF document text
    • https://pafegum.files.wordpress.com/2020/11/xumakosokidazok.pdfIn PDF document text
    • https://metibuvup.files.wordpress.com/2020/11/soviketuxalepejokeror.pdfIn PDF document text
    • https://tinogive.files.wordpress.com/2020/11/abstract_algebra_an_introduction.pdfIn PDF document text
    • https://fosigitivi.files.wordpress.com/2020/11/dr_georges_roman_devonshire_street.pdfIn PDF document text
    • https://pazeden.files.wordpress.com/2020/11/86767518253.pdfIn PDF document text
    • https://xedomawaxe.files.wordpress.com/2020/11/libikurixunakevijav.pdfIn PDF document text
    • https://lodoxepal.files.wordpress.com/2020/11/reremuradivuvevedivogobid.pdfIn PDF document text
    • https://pebofasomad.files.wordpress.com/2020/11/modizexejezeneja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd073edf-db16-4eee-8100-3c5f08f90af9/40102535390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2a11087-7615-4b54-a1dd-8ce37a587500/9375566664.pdfIn PDF document text
    • https://fevuxiwop.files.wordpress.com/2020/11/unable_to_accommodate_work_restrictions_letter.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_off0000657b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657B 3872 bytes
SHA-256: cc4a6503bed46f945dc9886ecaabb58987a0659c5fc5b9cf97f31270488112bb
font_01_sfnt_off0000734d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734D 5204 bytes
SHA-256: 6ac91daab05a6d64f4110c106987cd249e6767d63f47568cd063d366d8826647
font_02_sfnt_off00008501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8501 11436 bytes
SHA-256: 58bea2d746d08a2eef9f279517383150556c1b62a98b4cd4f3ffaab3b489bdff