Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f969dfa5184654…

MALICIOUS

PDF

77.5 KB Created: 2021-03-19 15:59:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 7287f6130e93bb070cadeeced91e2828 SHA-1: cae5b63a58fea1b074edceadb5edacd2c5044111 SHA-256: 02f969dfa5184654349638abd850f70a04ef6d226014682a0208b186f38001a7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting a phishing or malware distribution scheme. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically flags the document as a link farm on disposable hosting, reinforcing the malicious nature.

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://ponafet.ru/award?keyword=cathode+ray+oscilloscope+and+its+applications+pdf PDF link annotation
    • https://cdn.sqhk.co/fomavulobet/mihwhje/kilivafovotanot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393754/normal_6031ee6cba06b.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/jbgjIgj/geissele_aimpoint_pro_mount_review.pdfIn PDF document text
    • http://ig-copyrighthelpcenter.com/sar_tech_3_study_guidefrojq.pdfIn PDF document text
    • https://cdn.sqhk.co/rogekanus/hhgsidK/find_object_in_all_databases_sql_server.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393349/normal_5ffbd1249af78.pdfIn PDF document text
    • http://copyright-help-report.com/countable_and_uncountable_nouns_worksheets_elementaryydqg8.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/SS2jgkT/tunic_plus_size_hocus_pocus_shirt.pdfIn PDF document text
    • https://cdn.sqhk.co/lakekomum/j4hdBAT/pregabalin_side_effects_reviews.pdfIn PDF document text
    • http://procripton.com/nikujaqlnxc.pdfIn PDF document text
    • https://cdn.sqhk.co/kesokirow/ifigtU5/seesaw_for_schools_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nivunufozub/hUEidNa/74778225041.pdfIn PDF document text
    • https://cdn.sqhk.co/deloreba/ExH7Qii/bovepadedogilakukanalu.pdfIn PDF document text
    • https://cdn.sqhk.co/dojidavos/q3ibMhf/zinawejawatozinosefijowof.pdfIn PDF document text
    • https://cdn.sqhk.co/toromerepowa/iMifjjo/47141436292.pdfIn PDF document text
    • http://betmoy56.com/falsifying_time_sheets_canada1cxn6.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobibab/ijbhig0/stiletto_nails_tips.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/Eosjib0/mizegoduta.pdfIn PDF document text
    • https://cdn.sqhk.co/nusuguponu/dcihiav/88494545337.pdfIn PDF document text
    • https://cdn.sqhk.co/nosimasiv/1shbjjp/marshalls_home_goods_hours.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://favavobebin.epizy.com/counter_strike_go_setup.pdfIn PDF document text
    • http://vevemaj.rf.gd/what_is_night_mode_on_lasko_fan.pdfIn PDF document text
    • http://sofugudoz.rf.gd/ralidaxofurepipovonapa.pdfIn PDF document text
    • http://zapuvem.epizy.com/cashwagon_app_apk.pdfIn PDF document text
    • http://wikijozuw.epizy.com/air_cooled_heat_exchangers.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_off0000f358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF358 5248 bytes
SHA-256: dfc399e7d797301862b0ecbf370d29ff1f0f3ecd8a2173250390e9a7c6ecc231
font_01_sfnt_off00010532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10532 10296 bytes
SHA-256: 4736062457fe865d7624f6c30e3db72a443d4426d1601b44f5356ca828139cb0

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