Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a38488f61a38724…

MALICIOUS

PDF

78.0 KB Created: 2021-03-12 11:52:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 0208326647449d4c8c498b153f3b841e SHA-1: 2ecfdcbd6c923ce61505f41295d9370f2ac46189 SHA-256: 1a38488f61a38724577ba8c2cd34f75d3d711c5ce07997e4bb8038f41ac1c597
126 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'fokemale.ru', suggesting an attempt to redirect the user to a malicious site. The document body, though heavily obfuscated, contains keywords related to 'Tao 125 atv reviews', indicating a lure to attract user interest. No scripts were extracted, but the presence of multiple external links and the high ML score strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://fokemale.ru/wb?keyword=tao%20125%20atv%20reviews PDF link annotation
    • https://cdn.sqhk.co/gidenateg/UggnNig/13033496533.pdfIn PDF document text
    • https://cdn.sqhk.co/terodekijur/gghjfij/race_car_driver_games_unblocked.pdfIn PDF document text
    • http://womuvizitina.mywebcommunity.org/spelling_bee_words_2020.pdfIn PDF document text
    • https://nulenedo.weebly.com/uploads/1/3/6/0/136084055/157054.pdfIn PDF document text
    • http://pemizirevubel.mywebcommunity.org/how_to_use_a_kenmore_14_sewing_machine.pdfIn PDF document text
    • http://nazawate.iblogger.org/when_was_the_yellow_wallpaper_published.pdfIn PDF document text
    • https://zuwukozoxuwiged.weebly.com/uploads/1/3/4/7/134713444/kubowipepigezalemo.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/goberazililosefuzuziso.pdfIn PDF document text
    • https://cdn.sqhk.co/wigatozaduw/0yiaQJB/41972231193.pdfIn PDF document text
    • https://nasaxedinevizuv.weebly.com/uploads/1/3/4/7/134759800/9395021.pdfIn PDF document text
    • http://bovewitavivebu.getenjoyment.net/the_hidden_power_of_biblical_prayer.pdfIn PDF document text
    • http://jusibebobekig.iblogger.org/segubazamofutarokevu.pdfIn PDF document text
    • http://wivejudotimog.22web.org/cell_membrane_diagram.pdfIn PDF document text
    • https://jopizogado.weebly.com/uploads/1/3/4/3/134317888/3503867.pdfIn PDF document text
    • https://bojijoda.weebly.com/uploads/1/3/5/3/135325587/03aa1ba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pulitisagot.atwebpages.com/90549136054.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/bomberman_dyna_blaster_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ec68197-142b-45ac-8ffe-4481209a4b6a/stages_of_relapse_gorski.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a77dd270-07be-40ec-88b7-2d061d89d7f0/66100872129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad6b8f7d-b90c-4a2c-b8fe-ddcf076da328/96167920286.pdfIn PDF document text
    • http://werolalijatet.rf.gd/comox_weather_report_7_day.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/kundalini_yoga_sinhala.pdfIn PDF document text
    • http://levuvov.epizy.com/dekixefefexodevije.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/magic_video_maker_pro_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7a5c25b-272d-4d87-a813-db9dfa30f08e/60129852.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/casio_fx-991es_plus_scientific_calculator_price.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/93582304016.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_off0000f3c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C1 5056 bytes
SHA-256: bb3d4fd7365d513821d4252242e3cd199610f1f2640974581bef09591fc9bc92
font_01_sfnt_off00010527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10527 10952 bytes
SHA-256: 5e8e36dcf75afb454a6aa972609fbfaab06c07c56808e66f7527de505ace68a1