Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb01b95d118bc6cb…

MALICIOUS

PDF

78.5 KB Created: 2021-02-25 23:07:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8a9880858b9e47020122ee7fd155bf35 SHA-1: 8e5921ab646004a884cb44733978c8ef31f34424 SHA-256: bb01b95d118bc6cbe8b2ad6a1cafb037426943e20b17d2125b9ada6f97fe17cd
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('seumenha.ru') that is likely used for phishing or malware distribution. The PDF structure and the presence of external URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=how+to+use+anointing+oil+at+home PDF link annotation
    • http://zipubezexupoka.mywebcommunity.org/the_complete_turtletrader.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/nitirozidabumedo.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/how_much_does_a_bobcat_cost_per_hour.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/how_many_calories_are_in_a_dunkin_donuts_coffee_roll.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/wexusewipibamaxiv.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/fgjiKig/how_to_draw_bowling_ball_and_pins.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/how_to_write_a_review_lesson_plan.pdfIn PDF document text
    • http://barajofa.mywebcommunity.org/what_is_an_example_of_a_persuasive_essay.pdfIn PDF document text
    • https://cdn.sqhk.co/rularijulen/mPijBgg/skater_dress_pattern_simplicity.pdfIn PDF document text
    • http://zuzorovix.scienceontheweb.net/31076324724.pdfIn PDF document text
    • http://terugate.mypressonline.com/singer_4423_instruction_book.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/jcqsifp/xozerabi.pdfIn PDF document text
    • https://cdn.sqhk.co/tisojubew/iaHncdg/golf_course_hitting_range.pdfIn PDF document text
    • http://zakewabo.scienceontheweb.net/language_in_thought_and_action_5th_edition.pdfIn PDF document text
    • https://dawugagulinejud.weebly.com/uploads/1/3/4/3/134368664/pukakulozosove.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fuwawibu/full_form_of_adp_in_biology_term.pdfIn PDF document text
    • http://doriponesarom.myartsonline.com/jizebonuwenizelarobix.pdfIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/vabef.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95E 4940 bytes
SHA-256: 70520aaccc8103e01df015f13d1f7a560660931070502e8c551ed21d310be32d
font_01_sfnt_off0000fa08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA08 10576 bytes
SHA-256: 0e53b77404a4ffc67dfa34fe1183be845ccfb85c65e454c763142ff7b0872ced
font_02_sfnt_off00011e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E18 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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