Malicious PDF — malware analysis report

Static analysis result for SHA-256 14fa6fac9c416960…

MALICIOUS

PDF

76.4 KB Created: 2021-03-04 03:48:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 247c6d5b7e93339dba04dc7e00cb022f SHA-1: aef84fc40da133be4a1027efa436ea82c67d1ef2 SHA-256: 14fa6fac9c416960f70d8cf706586f95712f96b3f54fb65c63a248d849fd73d6
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a common phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/strik?utm_term=introduction+to+philosophy+classical+and+contemporary+readings+8th+edition+ebook PDF link annotation
    • http://serikanipesemo.iblogger.org/fuxivogalisozawegifozikin.pdfIn PDF document text
    • http://tulomodev.getenjoyment.net/where_are_american_home_sewing_machines_made.pdfIn PDF document text
    • https://cdn.sqhk.co/bezakebijuk/eaAUCij/47645896429.pdfIn PDF document text
    • http://piwulefimer.22web.org/bedsheet_painting_image.pdfIn PDF document text
    • https://cdn.sqhk.co/xagunetoxa/gujjrih/lukovofelerukepikakuziv.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/austroflamm_integra_2_pellet_stove.pdfIn PDF document text
    • http://dogalijun.scienceontheweb.net/mechanical_engineering_internships_washington_state.pdfIn PDF document text
    • http://world-wildshop.com/bivosuluxejufux3bl6u.pdfIn PDF document text
    • http://jojuxidalizoxa.22web.org/tijedasaxabamizodogiru.pdfIn PDF document text
    • http://noksipals.online/pizalorijuwezesuzulapa5i2gp.pdfIn PDF document text
    • https://cdn.sqhk.co/potonefamuve/WMOlahb/bamaxovazikino.pdfIn PDF document text
    • http://munasexoledati.iblogger.org/xalonawesusukimipatoxus.pdfIn PDF document text
    • http://wojisub.mypressonline.com/96136461297.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzemesafe/eia6zij/94368277778.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pujumek.myartsonline.com/how_to_check_coleman_mach_thermostat.pdfIn PDF document text
    • http://nifukugobu.rf.gd/37063795999.pdfIn PDF document text
    • http://didigixi.rf.gd/talathi_bharti_2019_online_form_jalgaon.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/arjun_reddy_film_bgm_ringtone.pdfIn PDF document text
    • http://zagusax.rf.gd/whats_the_game_where_you_guess_the_word.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/25544945792.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE986 5924 bytes
SHA-256: 067c2896c1beef7a6171eff23f849c409a9eeec1b3eacc74c58541c15151ea3a
font_01_sfnt_off0000fd84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD84 11640 bytes
SHA-256: 7e9ce9ca6059b044a34017137ac269019b032a9d3d9a2fbd22e4e84dc7f8b393

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