Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf3d0a07ae1285a…

MALICIOUS

PDF

45.6 KB Created: 2020-10-04 15:24:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 716042caeae39de8a8c9dae799990cf6 SHA-1: e80ecb0eea91d6ab187c058861eb9c08d8316ee5 SHA-256: 1cf3d0a07ae1285a2380cfdbde435e30d819bb421a9317be9e8c89d1746bd605
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/strik?keyword=dbr+auto+clicker+ios+download In PDF document text
    • https://site-1037121.mozfiles.com/files/1037121/xozagevutipu.pdfIn PDF document text
    • https://site-1037276.mozfiles.com/files/1037276/49207826876.pdfIn PDF document text
    • https://site-1036975.mozfiles.com/files/1036975/femiguwamiwenoz.pdfIn PDF document text
    • https://site-1036796.mozfiles.com/files/1036796/53689767521.pdfIn PDF document text
    • https://site-1039638.mozfiles.com/files/1039638/gosevuruke.pdfIn PDF document text
    • http://supomebe.bikeleelanau.com/uploads/1/3/1/4/131407537/4493840.pdfIn PDF document text
    • http://files.ourredeemergp.org/uploads/1/3/0/8/130814297/sodajatebaden-gabuto-vezidubumuk-wilimexo.pdfIn PDF document text
    • http://files.lblakemedia.com/uploads/1/3/1/4/131455475/pobegipozixufazulir.pdfIn PDF document text
    • http://susamijot.borntocreate.store/uploads/1/3/1/6/131606739/1dd99299cba857.pdfIn PDF document text
    • http://files.thefoodiepharmer.com/uploads/1/3/1/3/131383475/lepebafibatuboduxu.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/067aef50-f8fa-4053-bfb9-72d81de9b4ed/45726494890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/284bd8fc-21a5-4e24-a3e1-8b4a1d922305/merajurexiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9c4d1e1-ff42-4c2d-814e-e8607441ceda/42091714738.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/053bbd62-0298-4b4a-9ad4-9a4d30e6957e/fokafa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae3550a6-edc0-4f9f-8025-8d6fcd3539e0/13165008885.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12b5a6a6-e4e7-4594-a384-85cc04c450d4/tadupebadisurabozole.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_off00006939.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6939 5228 bytes
SHA-256: 81291cff0ea630daaa4d142916ce3dc1b7f4d83dfb2a0577f0632152048373a7
font_01_sfnt_off00007b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B19 2108 bytes
SHA-256: 1d739be46a300e0470098b03cb3525ce218fda25c712b9663aaff7a7ecef4354
font_02_sfnt_off000084e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E7 10668 bytes
SHA-256: 6ad10cae1c4da58d43f440eb582d5e21a23c340c3ca0ae4c6f9690cd3768fe13