Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3446e117be93290…

MALICIOUS

PDF

45.6 KB Created: 2020-10-05 11:59:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d9f8862a616ccb1042359d6b0f51c88b SHA-1: e3f1ac23773a6235468d1e99fb2e9641540770df SHA-256: a3446e117be93290d528b784a72fd0a539cff538414aa7c81eae81d55b86479b
124 Risk Score

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://cctraff.ru/strik?keyword=lyfe+jennings+268-+192+album+download+zip In PDF document text
    • https://site-1038705.mozfiles.com/files/1038705/raxanife.pdfIn PDF document text
    • https://site-1036925.mozfiles.com/files/1036925/87548866844.pdfIn PDF document text
    • https://site-1036659.mozfiles.com/files/1036659/10768029036.pdfIn PDF document text
    • https://site-1039215.mozfiles.com/files/1039215/52249237840.pdfIn PDF document text
    • https://site-1039735.mozfiles.com/files/1039735/42191776644.pdfIn PDF document text
    • https://site-1041695.mozfiles.com/files/1041695/36730552087.pdfIn PDF document text
    • https://site-1038631.mozfiles.com/files/1038631/49579635683.pdfIn PDF document text
    • https://site-1038578.mozfiles.com/files/1038578/xerilexobite.pdfIn PDF document text
    • https://site-1040442.mozfiles.com/files/1040442/foraras.pdfIn PDF document text
    • http://basusog.georgetowntavern.com/uploads/1/3/1/4/131407711/6760126.pdfIn PDF document text
    • http://giluna.landlockedthewebseries.com/uploads/1/3/1/4/131453943/jotovawi-makak.pdfIn PDF document text
    • http://files.theastorz.com/uploads/1/3/1/4/131437306/9ff6e6ab17.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00007022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7022 6384 bytes
SHA-256: 110bb7f19804a488d85589094444a836be1f2ec8febbe2ed795eb8e2b6239350
font_01_sfnt_off000085f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F7 10388 bytes
SHA-256: b8f2fa740b5bbbc6da6f94937980392d8d1373e6da8c9803d5038a13498a2aa1