Malicious PDF — malware analysis report

Static analysis result for SHA-256 de2bafe1042dc4ad…

MALICIOUS

PDF

74.0 KB Created: 2021-03-04 00:36:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 072a351a780281fbb51d0db02089a0df SHA-1: e6869515ed548539158da4971586c626500febd5 SHA-256: de2bafe1042dc4ade8e41b5d9f5498d80f3e76fcf7922068b6d91fa3344e58af
126 Risk Score

Malware Insights

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

This PDF document contains numerous links to disposable domains, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though partially corrupted, appears to be a lure related to technical information, aiming to trick users into visiting the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/award?keyword=how+to+integrate+drivers+to+windows+7+iso PDF link annotation
    • http://mobeditobaxul.scienceontheweb.net/24961216568.pdfIn PDF document text
    • http://inmyshtangen.xyz/rukaze1pzgk.pdfIn PDF document text
    • http://fukijuwevo.getenjoyment.net/msi_z87-g45_ram_compatibility.pdfIn PDF document text
    • http://xutexukoxobofi.mywebcommunity.org/how_to_cook_salmon_in_air_fryer_toaster_oven.pdfIn PDF document text
    • http://lunatan.medianewsonline.com/blue_iris_software_update.pdfIn PDF document text
    • http://medebupima.sportsontheweb.net/casio_privia_px-870_reviews.pdfIn PDF document text
    • http://timinome.getenjoyment.net/dipofojob.pdfIn PDF document text
    • http://xidufefonudug.sportsontheweb.net/wapevipedexazel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/2657487458.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/28966451906.pdfIn PDF document text
    • http://sirerig.epizy.com/94957968853.pdfIn PDF document text
    • http://namepafubi.atwebpages.com/dish_tv_plan_2020_list.pdfIn PDF document text
    • http://worined.epizy.com/52347306306.pdfIn PDF document text
    • http://tafiwepamubov.atwebpages.com/77871189648.pdfIn PDF document text
    • http://zotinulimoruv.rf.gd/zabufufiranaf.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_off0000e504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE504 5156 bytes
SHA-256: 0cd5ac1c32186974ed8b2963612f4f2f74c3dec2b87a26c6da673fc5cd7d30e9
font_01_sfnt_off0000f6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B9 10772 bytes
SHA-256: 2b00167838a8ca78c8a202d9c2b3d84c57163c37a6b26c3a82f0372001f3f77c

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