Malicious PDF — malware analysis report

Static analysis result for SHA-256 038f9785204c4142…

MALICIOUS

PDF

54.1 KB Created: 2020-10-03 05:24:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a0a4715f9d9675b6ca679cda948e0eea SHA-1: 92212ae62c1cbd8c8dd3a78ec12f5c1ce1b005ee SHA-256: 038f9785204c4142264b239b254d2cd6216b7563e5755873df999bab64f7d21f
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://cctraff.ru/strik?keyword=global+history+prelude+to+revolution+worksheet In PDF document text
    • http://files.louthlasers.com/uploads/1/3/2/6/132682924/2735851.pdfIn PDF document text
    • http://files.deckhanddetailing.com/uploads/1/3/2/8/132814935/faler.pdfIn PDF document text
    • http://files.euron.co/uploads/1/3/1/3/131398188/d4c6a86.pdfIn PDF document text
    • http://zifon.iobcwa.org/uploads/1/3/0/9/130969950/7152418.pdfIn PDF document text
    • http://lizalal.rachelhenson.com/uploads/1/3/1/4/131453960/wimupibixozotet.pdfIn PDF document text
    • http://files.rev-pile.com/uploads/1/3/0/8/130813855/roxedobulunemu-liwanera-nutivujek.pdfIn PDF document text
    • http://files.goodtimepainting.com/uploads/1/3/1/3/131380337/sumigise_pavevejisazuze_kusele_filokaz.pdfIn PDF document text
    • http://sowiwog.mandarinelan.com/uploads/1/3/2/8/132814989/2689919.pdfIn PDF document text
    • http://files.cavumcloud.com/uploads/1/3/1/6/131636825/747df.pdfIn PDF document text
    • http://files.luludeuxmillinery.com/uploads/1/3/0/7/130775257/lulejuvuzi-ruzinemibin-zoziwi-rudomokuvox.pdfIn PDF document text
    • https://site-1040165.mozfiles.com/files/1040165/giwonop.pdfIn PDF document text
    • https://site-1036646.mozfiles.com/files/1036646/pipivunupemazigipiwuwiji.pdfIn PDF document text
    • https://site-1037029.mozfiles.com/files/1037029/66101037757.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
    • 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_off00008712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8712 5416 bytes
SHA-256: d6b3ea42ab30bd06610f3c930457b6cfce784fe1d21b3a586f880e6b3bb56d6d
font_01_sfnt_off00009981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9981 10420 bytes
SHA-256: 5e12e838cc069196f4aa9f91c317b0984ffb111a1fef52d8fc05ea4e7706ec7d
font_02_sfnt_off0000bd0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD0D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3