Malicious PDF — malware analysis report

Static analysis result for SHA-256 18130c5155ba2f96…

MALICIOUS

PDF

42.0 KB Created: 2020-10-06 12:19:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 882933dfa488e2901d5b45003ebcc412 SHA-1: dfde60de756e5d2e450405ea8233b7d833a22648 SHA-256: 18130c5155ba2f9643073cecc6221592c8d4897680f878fc12b13d9e3982047b
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the Pixelmon Pokemon editor and includes URLs that are part of a link farm hosted on disposable domains. These elements strongly suggest an attempt to redirect users to malicious sites, likely for phishing or malware distribution.

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://gettraff.ru/pify?keyword=pixelmon+pokemon+editor In PDF document text
    • http://wovawerot.jkazmusic.com/uploads/1/3/1/4/131411806/rozigamugudaku-tapividaj-merakujarufaniz-debetobi.pdfIn PDF document text
    • http://files.nestdesignsinc.com/uploads/1/3/1/0/131070588/93cbd238f5.pdfIn PDF document text
    • http://files.miguel-castro.com/uploads/1/3/1/6/131606343/d3b8effd00.pdfIn PDF document text
    • http://files.noscopegaming.net/uploads/1/3/0/7/130739651/puperajub-vifoputap.pdfIn PDF document text
    • https://site-1036693.mozfiles.com/files/1036693/23240113684.pdfIn PDF document text
    • https://site-1038343.mozfiles.com/files/1038343/gesenobud.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/1/0482/6739/5236/files/6182471817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0633/6924/files/fujabigewoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9493/6226/files/95866478761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3524/7271/files/pathfinder_discordant_voice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74ae2dae-cc05-40b7-b736-309ea774908f/zinidipamivejopetivu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87a18364-ce31-4df6-9fcb-0589207e7247/59830936494.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70b19a78-d613-4186-ada2-3e0eb50798bf/sabosagaw.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_off00006287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6287 4848 bytes
SHA-256: 76336c58343502044a6dd945828769a69f0a94a3636479fceeed89102e26d0fe
font_01_sfnt_off000072f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F5 12636 bytes
SHA-256: 4acbbb68ae6eca28e9be94133ae32fa9928f9a8ad88cbdc434c26a0d11cf8c33

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