Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab8b09518f69dfae…

MALICIOUS

PDF

47.3 KB Created: 2020-10-07 10:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: dbf62571bb866f5f0032b875ad4048e5 SHA-1: 59712c0236414e0194930342fa78c4b57dcaf6cb SHA-256: ab8b09518f69dfaec64e4c7ffb00c5038c024dd8f629fad907b90f897096f851
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/pify?keyword=fate+and+destiny+brave In PDF document text
    • https://site-1036862.mozfiles.com/files/1036862/tiwisokekowamijemove.pdfIn PDF document text
    • https://site-1043177.mozfiles.com/files/1043177/duradiwepugipudo.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/37691346944.pdfIn PDF document text
    • https://site-1039222.mozfiles.com/files/1039222/kipinuv.pdfIn PDF document text
    • https://site-1037121.mozfiles.com/files/1037121/niwututovow.pdfIn PDF document text
    • https://site-1036635.mozfiles.com/files/1036635/zuruze.pdfIn PDF document text
    • https://site-1041388.mozfiles.com/files/1041388/bofinakewo.pdfIn PDF document text
    • https://site-1039207.mozfiles.com/files/1039207/18722350033.pdfIn PDF document text
    • https://site-1037000.mozfiles.com/files/1037000/81664313172.pdfIn PDF document text
    • https://site-1036821.mozfiles.com/files/1036821/guremiwofukabilob.pdfIn PDF document text
    • http://files.morroandjasp.com/uploads/1/3/0/9/130969375/wojerodijudo.pdfIn PDF document text
    • http://files.tomrobertsgardens.com/uploads/1/3/0/8/130814516/nabegutediwofuv.pdfIn PDF document text
    • http://files.shs-spartans.com/uploads/1/3/0/7/130776558/3177fdab6948.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/5ec12baa-55a1-43ec-a259-6584a5c942b3/juxetitoteporu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a45fe2f-8efb-41fc-91e1-10bc40634878/11908029753.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9efe1b7d-86d1-49d0-81a2-28e20e676e8f/79481170732.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e4e25f2-f712-4e92-8b01-6ca2336030a6/ligotimetemiri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72cc038b-f574-4589-82c1-e3f67145e9ff/3301814961.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_off00007b5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B5D 5044 bytes
SHA-256: 657655b98238c14da1b9221ceeafad8604c3b24a26e3cee8949cda8ac5a7940c
font_01_sfnt_off00008c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9B 10420 bytes
SHA-256: 5763a874b083d541ea287facaefb89da67ce9a87c2d511d9073b64e16a77b719

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