Malicious PDF — malware analysis report

Static analysis result for SHA-256 093bcf5e675e141c…

MALICIOUS

PDF

43.5 KB Created: 2020-10-07 07:06:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: eab909e343bdee46a3af518504772825 SHA-1: 26deb619d0cc70a882c1f675cf38a4dfc1f5a97c SHA-256: 093bcf5e675e141c6081863e3882e2a69006bd3ea1934893d5a1d67ff893d695
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to disposable domains and redirectors, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of a link to a known malicious redirector further supports this assessment. No scripts were extracted, but the document's structure and embedded links are designed to lead users to malicious sites.

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://ttraff.com/pify?keyword=boy+scout+shotgun+merit+badge+worksheet In PDF document text
    • http://sevewuru.woodland50pta.com/uploads/1/3/1/4/131437261/1200347.pdfIn PDF document text
    • http://files.ronnieroseband.com/uploads/1/3/0/8/130874010/7684e.pdfIn PDF document text
    • http://daviwoba.stevenmorrisondrums.com/uploads/1/3/1/8/131856339/telaruxexufil_wovofakib_folepogomoxa.pdfIn PDF document text
    • https://site-1039777.mozfiles.com/files/1039777/texarefifagisotazafafanox.pdfIn PDF document text
    • https://site-1041284.mozfiles.com/files/1041284/47460061.pdfIn PDF document text
    • https://site-1040034.mozfiles.com/files/1040034/74321246426.pdfIn PDF document text
    • http://files.puffpuffpasssmoke.com/uploads/1/3/2/3/132303024/9268360.pdfIn PDF document text
    • http://files.magicappleparents.net/uploads/1/3/1/4/131409236/nemekilejav_zixewofagud_sepamatan.pdfIn PDF document text
    • http://files.panterracoach.com/uploads/1/3/0/7/130775795/3036920.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/f6d1feeb-e7bb-4b84-90c4-e20d640b07ba/nenemaje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ff73680-0e8f-4f3f-9304-0e4b0307f080/wixuruzewuxubama.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_off00006a07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A07 5768 bytes
SHA-256: 453f2087669d7651c13148ea01849b8e1f38459f1a7abc294e9ffbea9ecf59d4
font_01_sfnt_off00007d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9F 10444 bytes
SHA-256: 10b08939d5f6c98e8560e6be23455462ccda2b965a69f256e9f87f484baeef74

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