Malicious PDF — malware analysis report

Static analysis result for SHA-256 7479b295f93b247f…

MALICIOUS

PDF

72.7 KB Created: 2021-03-03 09:52:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 00fa6514e3e7da978a762608e303c62e SHA-1: 7d9b999aed9514cfe258544fb20b31bae064d58b SHA-256: 7479b295f93b247f1b9c7d4d7010d10dad1a0ce55867afbd4b386479ef9e4b5b
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, many of which point to disposable hosting and are likely part of a link farm designed to obscure the true malicious destination. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The presence of numerous external URIs and the link farm heuristic strongly suggest this document is intended to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wb?keyword=hp%20laserjet%20p1606dn%20service%20manual PDF link annotation
    • https://cdn.sqhk.co/xeduwukaxusa/hcidjgr/elite_dangerous_orbit_planet.pdfIn PDF document text
    • http://lorewipa.scienceontheweb.net/28609417980.pdfIn PDF document text
    • https://jenazikefu.weebly.com/uploads/1/3/4/0/134017187/2355306.pdfIn PDF document text
    • http://gejulavofanutar.mygamesonline.org/xabip.pdfIn PDF document text
    • http://polobasopika.mywebcommunity.org/primeros_auxilios_definicion_segun_la_oms.pdfIn PDF document text
    • http://kakolamilasaru.medianewsonline.com/watch_the_woman_in_the_window_2020_online.pdfIn PDF document text
    • http://movawizaxaxato.mywebcommunity.org/deer_predation_or_starvation_answer_key_quizlet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498882/normal_5fcaab3c05c37.pdfIn PDF document text
    • http://relibafogat.sportsontheweb.net/42499193576.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/jihjegi/sodonuvizuribiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417314/normal_600add3447701.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427821/normal_5fe418e7ba916.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/the_exorcist_1973_cast_died.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/5ginjcl/sad_heart_touching_mp3_ringtone_download_telugu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sajoveguduv.onlinewebshop.net/dream_dictionary_app_for_iphone.pdfIn PDF document text
    • http://penanaras.myartsonline.com/how_to_make_a_pallet_jack_go_up.pdfIn PDF document text
    • http://teluroluxeterez.myartsonline.com/pudilulumogeza.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_off0000ddf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF1 5664 bytes
SHA-256: 23987db3300b83345ecda33b6353e460a88686a1612c831e6b5d57199d32d3d4
font_01_sfnt_off0000f12d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12D 10736 bytes
SHA-256: d4a6f1cc5dac84303474a6d5c0c13b79e151ecb195f024432d52ed4196c7b89f

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