Malicious PDF — malware analysis report

Static analysis result for SHA-256 92dbd5b2774f2f13…

MALICIOUS

PDF

70.8 KB Created: 2021-02-19 09:04:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 58e132ebcd6b47c4ef3fed42a6b7e2f9 SHA-1: d61eeea8d4951acd31e4faa828585ff370b7c994 SHA-256: 92dbd5b2774f2f13dacb44892cda4b749d1b0eee9fbd8b7324334a4fd25eb9c7
126 Risk Score

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://maypoin.ru/123?utm_term=como+crear+abundancia+audiolibro+completo PDF link annotation
    • http://dontbeshy.xyz/justin_bieber_believe_song_free6qhdy.pdfIn PDF document text
    • http://wspring.space/kiwozeqjxcm.pdfIn PDF document text
    • http://teniran.22web.org/android_layout_design_template_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478685/normal_5ff1514bde312.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388428/normal_60014136859ea.pdfIn PDF document text
    • http://dorightunion.com/40243436287xajo9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449012/normal_60267a64bb334.pdfIn PDF document text
    • http://damomemisogadex.iblogger.org/lonenimopef.pdfIn PDF document text
    • https://zoseduzarososu.weebly.com/uploads/1/3/2/7/132740870/ed41eed.pdfIn PDF document text
    • https://japipimimobuxi.weebly.com/uploads/1/3/1/0/131071183/9694296.pdfIn PDF document text
    • http://teleporttur.ru/53763327256f036r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459776/normal_601f8cdce77c7.pdfIn PDF document text
    • http://conicppjry.bid/craftsman_pyt_9000_parts_manual5pcdk.pdfIn PDF document text
    • http://odemebayisitrafik.com/aromatic_nucleophilic_substitution_reactionv5tjk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dajajubofu.rf.gd/saxafafatokopolepe.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_off0000d67a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD67A 5084 bytes
SHA-256: 4b4891601906063fcc7d25e239ef21aa6960377d22f61f26f883349e078547c7
font_01_sfnt_off0000e7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A3 11420 bytes
SHA-256: 8c8653a7200fda68b0413d94dc668290d3639f643b67cbed9ac62261419b7fde