Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ecba503d2a7843…

MALICIOUS

PDF

80.8 KB Created: 2021-03-13 18:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 665c448501100af5c789da8cccf7f7e9 SHA-1: d16d111192094808efec2ee7d872e71a55289376 SHA-256: 34ecba503d2a784311dc68eb073971268c3b92c7a7d6de78b8d60d55a01c4931
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a phishing or credential harvesting attempt. The document body, though heavily obfuscated, appears to be a lure related to 'competitive analysis for restaurant pdf'. No scripts were extracted, but the presence of external URIs and the overall heuristic profile strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://ponafet.ru/award?keyword=competitive+analysis+example+for+restaurant+pdf PDF link annotation
    • https://cdn.sqhk.co/tamejenonisi/jaUA16J/sherwin_williams_underseas_front_door.pdfIn PDF document text
    • http://vutisonoj.sportsontheweb.net/ubuntu_shell_script_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/wupetutigo/ccjcjaB/frozen_2_4_in_a_row.pdfIn PDF document text
    • https://cdn.sqhk.co/letareximo/ghm5c0A/rapamosoboguli.pdfIn PDF document text
    • https://cdn.sqhk.co/dedomafub/DzijhhD/dijox.pdfIn PDF document text
    • http://gizovivomiz.getenjoyment.net/denon_avr-3312ci_price.pdfIn PDF document text
    • http://xexulijupofa.iblogger.org/bece_2018_rme_questions_and_answers.pdfIn PDF document text
    • http://jigitozunawada.66ghz.com/tilray_earnings_report.pdfIn PDF document text
    • https://cdn.sqhk.co/gofelaxes/jijbqgi/85989389866.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sosekemuzunenu.rf.gd/somime.pdfIn PDF document text
    • http://woranuganavot.myartsonline.com/soxozar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/314bfa49-cb6f-40f3-9a8b-1bcea4c08942/singer_237_parts_diagram.pdfIn PDF document text
    • http://wulekugigewipo.epizy.com/aalborg_boiler_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08e6da81-8e86-40d3-9a2a-8e256d0c8749/rodojaforanileluxuv.pdfIn PDF document text
    • http://xogeguf.rf.gd/tableau_server_activation_key_crack.pdfIn PDF document text
    • http://nukamepewavux.epizy.com/84238765743.pdfIn PDF document text
    • http://vatamutotomo.epizy.com/5389640533.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42358013-06a6-4ece-b1a5-b642afc41938/lomixudosidemarabikan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfa66a16-faa2-44ad-a350-b5adc3de0520/is_the_green_mile_film_based_on_a_true_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8b8b439-ab8d-4427-94d2-f30e8ee6f76e/samsung_sm-t337a_battery_replacement.pdfIn PDF document text
    • http://kitilogokufalu.atwebpages.com/nimojezilebole.pdfIn PDF document text
    • http://kixukad.epizy.com/30_day_clean_eating_challenge_clean_food_crush.pdfIn PDF document text
    • http://selepag.rf.gd/what_is_kitchen_hood_fire_suppression_system.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_off0000fd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD04 5324 bytes
SHA-256: fa8f94bbde59b1aaae02f0f8e9b95bf57144bd09b940a9879fb39b8c043253ce
font_01_sfnt_off00010f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F15 11300 bytes
SHA-256: f9cf42d74d7c9e9b5e10d7aec954c11cf88913ab831f28da20d1375b22094754

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