Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1186dd4e11c5a07…

MALICIOUS

PDF

72.9 KB Created: 2021-03-13 21:25:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d891c7df3a52b6458a28a04475d0fb34 SHA-1: 232dec8d7b80d3fe5e3888132c1dba4af69b40ed SHA-256: a1186dd4e11c5a070d2c29cf571984fb3fcfa21cbe43ca02243fcb1389d3d065
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, containing external URIs pointing to potentially malicious domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, suggesting a phishing or malware distribution attempt. The embedded URL 'https://fokemale.ru/strik?utm_term=logitech+k330+keyboard+receiver' is likely used to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/strik?utm_term=logitech+k330+keyboard+receiver PDF link annotation
    • http://fobifisoba.22web.org/aditya_hrudayam_telugu_format.pdfIn PDF document text
    • http://zakisakabiran.iblogger.org/best_reader_app_for_ipad_highlight.pdfIn PDF document text
    • http://gelivebun.22web.org/harley_davidson_motorcycle_mechanic_school_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475389/normal_5feb3fe9528e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417656/normal_6026a798df587.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411500/normal_6031b39b90201.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454995/normal_6042daa3b1e0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445331/normal_6004e5da29b92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427538/normal_601f32a90acf5.pdfIn PDF document text
    • http://kixumitusomu.iblogger.org/456918441.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_602ff59cdc996.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476765/normal_5ffc169e5aa64.pdfIn PDF document text
    • http://tuvivukaroj.mygamesonline.org/bhagavad_gita_chapter_11_in_english.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_6019d4cc2fd07.pdfIn PDF document text
    • http://datovufes.scienceontheweb.net/99912419613.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485015/normal_600a235662c45.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kapirexazi.onlinewebshop.net/chapter_1_research_sample.pdfIn PDF document text
    • http://gafodix.myartsonline.com/71268070015.pdfIn PDF document text
    • http://depegiwisa.epizy.com/how_to_use_garmin_delta_xc_series.pdfIn PDF document text
    • http://wepikupovug.myartsonline.com/92103644564.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/vawupadorolomagaro.pdfIn PDF document text
    • http://vexolofifete.atwebpages.com/73446068569.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/free_kjv_study_bible_app.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/nubulusanizax.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_off0000dd7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7C 5604 bytes
SHA-256: 2234880ce0cd73e58b7f585fefc66618c5c71adb8933f3e9cd323af28e2c204d
font_01_sfnt_off0000f097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF097 11396 bytes
SHA-256: 5e6a6c6d6244ea9b554f8cc2e0cdb3aa4e620828d2d825186f73b9abc40e283f

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