Malicious PDF — malware analysis report

Static analysis result for SHA-256 db6a43259caa25f5…

MALICIOUS

PDF

35.1 KB Created: 2020-10-03 08:39:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7217e662df1e71fb0b49723f2362200f SHA-1: 31bdd2ff9a5e356d86b531d09cc0813b26fc0530 SHA-256: db6a43259caa25f51e9d5a8bf92def805c98c6da16d030fd31c49cba005a7051
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://ttraff.cc/pify?keyword=lakeshore+soccer+tournament+2020 In PDF document text
    • http://files.nwgachampionship.com/uploads/1/3/0/7/130738739/lomiziwovoro.pdfIn PDF document text
    • http://files.bettinakoch.net/uploads/1/3/2/6/132682535/5631302.pdfIn PDF document text
    • http://gusidisuz.hatcherforgeandleather.com/uploads/1/3/2/3/132302978/d5642b8dbed4.pdfIn PDF document text
    • http://files.contrastmetalworks.com/uploads/1/3/2/6/132681969/0c1fe611a7.pdfIn PDF document text
    • https://site-1036971.mozfiles.com/files/1036971/8016237478.pdfIn PDF document text
    • https://site-1036667.mozfiles.com/files/1036667/36861645936.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/abf1a7bc-8ba2-4db3-b99e-0b6fd9b51599/sudegoranusemusuxojabelev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bce9070a-9725-4509-87f4-f7d6ba35507b/dowuxanav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d15ab62-0a41-4460-b74e-baddcf2f12f5/61056838121.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6ca7d48-870a-422a-9b2b-15eb98afbf6d/98202109265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4891/9459/files/xaluwuzorogikobopunamapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8101/0851/files/the_impossible_game_book_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5598/files/molecular_genetics_of_color_mutations_in_rock_pocket_mice_answer_key.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_off000049c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49C8 5284 bytes
SHA-256: fb3bbc3c826f787eb23c51c158c0ca878c35b589ec6f670b45e6699041fd039d
font_01_sfnt_off00005b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B99 10564 bytes
SHA-256: 87574a54a4cd284022fe7db45e8379d80a8c0373b6dee886ef3031b6c3353981

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