Malicious PDF — malware analysis report

Static analysis result for SHA-256 d765185fea7770d2…

MALICIOUS

PDF

74.4 KB Created: 2021-03-08 05:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: cba5d13409c37a87ffb9be9b1be63a53 SHA-1: 2dfdec3687e7e695af8cbf5764190785528d463b SHA-256: d765185fea7770d2cbb922c5d2daf36659157d7a83a9d6fed7be6528d11398b3
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for SEO manipulation or distributing malware. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wix?keyword=realidades+1+capitulo+3b+prueba+3b-3+answer+key PDF link annotation
    • https://zosotise.weebly.com/uploads/1/3/5/3/135393527/2d07be2f91c95.pdfIn PDF document text
    • http://fito4ka.xyz/naluragofujuruwinuluz27d98.pdfIn PDF document text
    • https://gumijunu.weebly.com/uploads/1/3/5/3/135399233/2afb121a49586f.pdfIn PDF document text
    • https://dodivivedi.weebly.com/uploads/1/3/3/9/133997878/721a205fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496146/normal_600f80ef26f4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453108/normal_5fdda693ca7c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426062/normal_5fd3b11219d08.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/craftsman_electric_edger_parts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377113/normal_600019fe455f2.pdfIn PDF document text
    • https://waguxezemi.weebly.com/uploads/1/3/4/7/134703223/9251846.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472766/normal_5fc9ea3f8e93a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465133/normal_603ab54059ef0.pdfIn PDF document text
    • http://fegivate.medianewsonline.com/what_is_the_formula_for_half_life_in_physics.pdfIn PDF document text
    • http://myluckybet.xyz/latevy7skk.pdfIn PDF document text
    • https://lelopotive.weebly.com/uploads/1/3/0/7/130738546/e98462a0532.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/dofufiri/odia_film_song_a_to_z.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/dorezurabekalojojilev.pdfIn PDF document text
    • http://bumurulepowele.myartsonline.com/actores_de_la_pelicula_el_diario_de_greg.pdfIn PDF document text
    • http://wozimape.onlinewebshop.net/xusirizewewo.pdfIn PDF document text
    • http://manosotidokef.myartsonline.com/apc_back-ups_pro_550_replacement_battery.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD599 3060 bytes
SHA-256: 0800f2cc262465a4a1d75ba12e0be2b9149391edefc897f1ad6fe5f77c27a4d4
font_01_sfnt_off0000e083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE083 5720 bytes
SHA-256: 493a6c30b847ef9d8890c47f04bc3f0925cb62ec621185cc8a5a946b929dfdf8
font_02_sfnt_off0000f428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF428 10920 bytes
SHA-256: f7784430776b344ac879143c787afb70992414964167879592cfb5afe49a6676

Open this report in the interactive analyzer, or submit your own file for analysis.