Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6fcd13810b91ce1…

MALICIOUS

PDF

43.9 KB Created: 2020-10-07 05:48:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: fe66dacb46bc02e0d048ace7ee64965b SHA-1: f09041dafcfa28f0821a99758b1594b0ab5aeedf SHA-256: d6fcd13810b91ce1404b331c537bfa74f1c88c7d019ce4864d06ca0f4ace14d1
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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://cctraff.ru/strik?keyword=adobe+premiere+pro+cc+2017+manual+pdf In PDF document text
    • https://site-1040223.mozfiles.com/files/1040223/webazetilale.pdfIn PDF document text
    • https://site-1036830.mozfiles.com/files/1036830/41243012985.pdfIn PDF document text
    • https://site-1041184.mozfiles.com/files/1041184/zujowisibebazato.pdfIn PDF document text
    • https://site-1037142.mozfiles.com/files/1037142/58917263993.pdfIn PDF document text
    • http://files.throughhanseyes.com/uploads/1/3/0/7/130776246/1307427.pdfIn PDF document text
    • http://files.wolfisle.com.au/uploads/1/3/1/1/131163969/duwura-jiresomadamiz.pdfIn PDF document text
    • http://files.united-townfinancial.com/uploads/1/3/1/6/131606284/movugewexuzurom.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/1/0493/0925/3791/files/long_fingerless_gloves_mens.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/82589195678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4066/7808/files/goodnight_loving_trail_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5419/5097/files/45614664838.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2d92ea4-28f4-46e1-819c-038277906729/jefakurato.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/918ab684-8907-412c-8a57-c67e22cfa3b2/48602844857.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe4263cf-b273-42aa-93d3-a349d3ac9cec/zoseziruwokapifibi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bce571f-b272-4285-af9c-0ca2a760aa45/tisagegogavib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c2bee7b-6f42-4fcb-86d7-db9cae1857fc/4019999656.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2B 5656 bytes
SHA-256: 38afb7e0a3badaadae304550e468a523998d79ecca32d9f146869e20dfabf163
font_01_sfnt_off00007f58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F58 10308 bytes
SHA-256: b2b7bf644f21c7dd818303e712b15b43cc9581dcad4079278e06110bb9e5c4ea

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