Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a0cb71f9e784234…

MALICIOUS

PDF

53.9 KB Created: 2020-10-15 14:22:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d0a7a0f290c807d6b0e0047d2afdab0e SHA-1: 7795628bb64df60e54832e2c03bd8646decc64be SHA-256: 9a0cb71f9e784234e2b96c12d88e949474cacc6ef5ead8fc7e263d04845b4ac0
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://gettraff.ru/123?keyword=harley+davidson+2020+touring+models+service+manual.pdf In PDF document text
    • https://site-1037205.mozfiles.com/files/1037205/67312851957.pdfIn PDF document text
    • https://site-1048221.mozfiles.com/files/1048221/ribuni.pdfIn PDF document text
    • https://site-1041395.mozfiles.com/files/1041395/mabiterikesowetewabafuget.pdfIn PDF document text
    • https://site-1039324.mozfiles.com/files/1039324/94106695697.pdfIn PDF document text
    • https://site-1044186.mozfiles.com/files/1044186/bowoseso.pdfIn PDF document text
    • https://site-1043959.mozfiles.com/files/1043959/vopokolugesawimifuzivem.pdfIn PDF document text
    • https://site-1048185.mozfiles.com/files/1048185/11825009383.pdfIn PDF document text
    • https://site-1038427.mozfiles.com/files/1038427/26648586280.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f874277af314.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f8718b9b0867.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f87d7a560e63.pdfIn PDF document text
    • https://site-1040200.mozfiles.com/files/1040200/pazedebegemugoxanobipu.pdfIn PDF document text
    • https://site-1039898.mozfiles.com/files/1039898/wopowexonisazawu.pdfIn PDF document text
    • https://site-1037205.mozfiles.com/files/1037205/35627752590.pdfIn PDF document text
    • https://site-1037000.mozfiles.com/files/1037000/49959632406.pdfIn PDF document text
    • https://site-1039672.mozfiles.com/files/1039672/78499463120.pdfIn PDF document text
    • https://site-1038660.mozfiles.com/files/1038660/90615338551.pdfIn PDF document text
    • https://site-1036713.mozfiles.com/files/1036713/79797497353.pdfIn PDF document text
    • https://site-1041682.mozfiles.com/files/1041682/9146806019.pdfIn PDF document text
    • https://site-1043328.mozfiles.com/files/1043328/kukuxobejutasinogudaveb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbb91912-3753-4816-b910-b62321c17769/xafuza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68c01bad-5eac-437f-b735-e20b1aeee569/38508810945.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_off0000913d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x913D 5904 bytes
SHA-256: f9d4746a49469453f0f590a5f5ab8044a65519b31f513348cb33d586ea59faf4
font_01_sfnt_off0000a555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA555 10660 bytes
SHA-256: 4488df63ca2a96c6e09d9133e7cdfd10c8f3f378f07b56f3c910df8e836debb9

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