Malicious PDF — malware analysis report

Static analysis result for SHA-256 daf7457c818c3e11…

MALICIOUS

PDF

52.7 KB Created: 2020-11-08 22:50:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 8f6fe7826f25d937aa1aeaea181a74c2 SHA-1: f4b3d5e30f0302c49b4e0223aec5c0d554e6038b SHA-256: daf7457c818c3e11fc028a90ed7f6c24009fdc72c3cc2ae003a48297718482b5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/123?keyword=8+stages+of+genocide+cambodian PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368740/normal_5f8de4fda65f3.pdfIn PDF document text
    • https://gepagalegizexu.weebly.com/uploads/1/3/4/4/134478943/8927623.pdfIn PDF document text
    • https://papokerudinex.weebly.com/uploads/1/3/4/3/134310480/570a5076fa2afd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://xubebatat.files.wordpress.com/2020/11/30752323562.pdfIn PDF document text
    • https://jusakob.files.wordpress.com/2020/11/falerewasaxelezenavaji.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/joxokofafifejudiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0705e44-3b69-4b87-a5c6-66c0c5bd5dba/83740934902.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/4598078934.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/gopiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb0883e6-6690-4711-8203-a520c55d7b0f/impulz_luts_free_crack.pdfIn PDF document text
    • https://mewidugeko.files.wordpress.com/2020/11/jenetujonufijafakit.pdfIn PDF document text
    • https://rogiwojugafi.files.wordpress.com/2020/11/bopifalik.pdfIn PDF document text
    • https://fimalul.files.wordpress.com/2020/11/xenikefeg.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_off000080bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80BC 5240 bytes
SHA-256: fb587dab2b4ed18b66ba4d7422a9977e4f1dc1ba0e2fec2fb4ebb44e84095154
font_01_sfnt_off0000926e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x926E 11104 bytes
SHA-256: edbb656ece44709d3727de55af0d59a2cfab345b627c9a4a25768b3d2e726594
font_02_sfnt_off0000b7d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7D5 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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