Malicious PDF — malware analysis report

Static analysis result for SHA-256 5929178d967e7b29…

MALICIOUS

PDF

46.5 KB Created: 2020-10-11 08:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c61583edbad49d216a6020b9f9865056 SHA-1: 61781cb51ab8a4f215295a672ef18cdb3cac7a07 SHA-256: 5929178d967e7b29127c077da0392925790563b02ecb885ab857fc70aa8bc6dc
232 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/pify?keyword=actron+cp9580a+manual In PDF document text
    • https://site-1038440.mozfiles.com/files/1038440/74209636533.pdfIn PDF document text
    • https://site-1043603.mozfiles.com/files/1043603/20160924392.pdfIn PDF document text
    • https://site-1040050.mozfiles.com/files/1040050/27894147004.pdfIn PDF document text
    • https://site-1037184.mozfiles.com/files/1037184/mupafikajuto.pdfIn PDF document text
    • https://site-1042840.mozfiles.com/files/1042840/58873940854.pdfIn PDF document text
    • https://site-1038468.mozfiles.com/files/1038468/xowodadexep.pdfIn PDF document text
    • http://files.geraldinefirequeen.co.uk/uploads/1/3/0/9/130969141/1916342.pdfIn PDF document text
    • http://files.jackbrownart.com/uploads/1/3/1/8/131857112/57b74b.pdfIn PDF document text
    • http://tegopem.grangerlandrfd.com/uploads/1/3/2/7/132741100/43a2b5bff.pdfIn PDF document text
    • http://nopuze.sharpeningonsite.com/uploads/1/3/0/8/130814010/f7fa0ac4927e.pdfIn PDF document text
    • http://files.bodyworksbykneadit.com/uploads/1/3/2/6/132681192/bevizibadukimezuxobi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8731/8180/files/bixurugitowurorusur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7622/1096/files/61014072646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2383/0687/files/rewenijoziw.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_off000076be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BE 5508 bytes
SHA-256: 59791df21bcb6baede7e40ddd21d6d9261d74b0313dcec4d60e8402ea3e54ce6
font_01_sfnt_off0000895c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x895C 10452 bytes
SHA-256: 25bce2abc40c5bcea8d5ffe76ce847f9a8cad106738263cbee808c92b6fc2073

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