Malicious PDF — malware analysis report

Static analysis result for SHA-256 d69354e626962f8c…

MALICIOUS

PDF

84.0 KB Created: 2021-04-22 00:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40d1f31fa0ac63d448089047144536bd SHA-1: 82ca148fd003f7537b15e69bb96e8a21195ba4a8 SHA-256: d69354e626962f8c9ce9b5505638657b7346b112ca0af429738c0701d5b89317
126 Risk Score

Malware Insights

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

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing infrastructure. The presence of external URIs and the ML classification strongly suggest this PDF is used to redirect users to malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://seumenha.ru/strik?utm_term=excel+2010+sum+formula+not+updating+automatically
    • http://xefijemav.iblogger.org/nsw_road_accident_reports.pdf
    • https://cdn-cms.f-static.net/uploads/4379046/normal_6028a5c11de15.pdf
    • https://cdn.sqhk.co/pinofizulag/uhtoHhe/skater_kid_clothes.pdf
    • http://zamowafa.mywebcommunity.org/33912027983.pdf
    • https://cdn-cms.f-static.net/uploads/4392861/normal_6012972d3d8cc.pdf
    • https://static.s123-cdn-static.com/uploads/4366952/normal_5ffab05892a14.pdf
    • https://cdn.sqhk.co/rikopekela/7EchjO1/kunujaxuzevagusodiro.pdf
    • https://cdn-cms.f-static.net/uploads/4385863/normal_6044d0e06aed1.pdf
    • http://gazedalepi.sportsontheweb.net/79988931322.pdf
    • http://sufupisiwe.22web.org/69917546659.pdf
    • https://cdn.sqhk.co/gopuxipo/9gfhchi/gigorikarasiwodijerosatax.pdf
    • http://fapenas.22web.org/tamil_full_movies_app.pdf
    • https://static.s123-cdn-static.com/uploads/4380403/normal_5fddcbc0e4521.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://27f1a270-5048-4778-87f0-574dfe85248a.filesusr.com/ugd/b7306e_7b7abf45156a4f14a2ab6e11bc517390.pdf?index=true
    • http://xutenasejubibe.atwebpages.com/free_amelia_bedelia_books.pdf
    • http://gurisitubonofa.epizy.com/presentation_templates_keynote.pdf
    • http://nivujipa.epizy.com/sample_answer_sheet_for_ielts_reading_and_listening.pdf
    • http://topazipimobol.epizy.com/12203963391.pdf
    • http://xijaxatob.epizy.com/funnyhouse_of_a_negro_quotes.pdf
    • https://b81f28a7-a6cc-4df9-aebb-a76b708ee4b5.filesusr.com/ugd/df05b2_c5bde1d36ded4732b46bda75e04188b8.pdf?index=true
    • https://f37c3615-20b0-4e70-b1e7-2acf34113780.filesusr.com/ugd/1e533a_26018b8293724aa5a0121188ea4dcd9f.pdf?index=true
    • https://748e62c5-a849-4dff-87e7-3b5f74cb3522.filesusr.com/ugd/0df896_4b2df7ab83e349ed903e8273beaeb32b.pdf?index=true
    • https://1ce8651a-bfbb-4b9a-b1bf-24b3b574775a.filesusr.com/ugd/ac72e0_52fdb658f1b24b7e8a11f010ab35e839.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010627.bin
843fc2b444afd47f0236dc48802c2210cd8f28de5c2b4c5eec52e20caa029eaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10627 5928 bytes
font_01_sfnt_off00011a5b.bin
2358869fe6eb05b06e036fe6e8115a58c88add7f1fb86168c5d0651e9de9fd08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A5B 11668 bytes

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