Malicious PDF — malware analysis report

Static analysis result for SHA-256 747f91aabdc884fa…

MALICIOUS

PDF

76.3 KB Created: 2021-05-09 03:35:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c9b4524bb7a30f71fb9da6d9aeb116f SHA-1: 29f635932fb6bdf8d4fb8fdf0fa7c0bf644db740 SHA-256: 747f91aabdc884fa02c2353cb818cacfe52a0460ea7c8e5821b61582509067cf
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that appears to be part of a phishing or scam campaign, disguised with search terms. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dafemum.ru/strik?utm_term=hummingbird+170+fish+finder+parts
    • https://cdn.sqhk.co/kojetozativ/fpjdXDl/wwe_news_raw_spoilers.pdf
    • http://toxipoxekej.medianewsonline.com/business_plan_for_online_shopping_website.pdf
    • https://cdn.sqhk.co/rajunakeb/hiegc84/my_city_island_mod_apk.pdf
    • https://cdn.sqhk.co/guwuweri/iahiib3/fugewexibi.pdf
    • https://cdn-cms.f-static.net/uploads/4470024/normal_6056a962e6a94.pdf
    • http://bapatavusirave.mygamesonline.org/yu-gi-oh_worldwide_edition_stairway_to_the_destined_duel_rom_cheats.pdf
    • https://cdn.sqhk.co/fokolamezo/gjgitRP/water_wyvern_ark_valguero.pdf
    • http://mazipuvaxa.mywebcommunity.org/the_basketball_diaries_jim_carroll.pdf
    • https://static.s123-cdn-static.com/uploads/4487382/normal_5ff77703dea60.pdf
    • https://cdn.sqhk.co/kagumuzom/iihfghz/color_chartreuse_meaning.pdf
    • http://banewotovotewe.iblogger.org/moto_g_3rd_gen_charging.pdf
    • http://nigemutekilum.mypressonline.com/free_printable_blank_bingo_cards_for_teachers.pdf
    • http://zakosemej.mypressonline.com/gasoragokunelizofijufug.pdf
    • http://mojofaza.mypressonline.com/sujet_brevet_physique_chimie_2020.pdf
    • https://cdn.sqhk.co/daxutoxod/jajhjef/42661725502.pdf
    • https://cdn-cms.f-static.net/uploads/4456128/normal_6012273f9bc18.pdf
    • http://pixunune.sportsontheweb.net/are_greens_good_for_weight_loss.pdf
    • https://cdn.sqhk.co/zoxinugokas/ghRIHy9/free_muscle_car_sound_ringtones.pdf
    • https://cdn.sqhk.co/sosobita/hdyifrC/zitidiperurove.pdf
    • https://cdn-cms.f-static.net/uploads/4446038/normal_60464ff35d24b.pdf
    • http://ketaton.mywebcommunity.org/dobetovogi.pdf
    • http://fafasun.iblogger.org/87890511244.pdf
    • http://kubosikavudux.mygamesonline.org/magisterio_definicion.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://rawigukegopafot.onlinewebshop.net/14178872305.pdf
    • http://dudolisimak.epizy.com/51883965108.pdf
    • http://fusizizugunu.epizy.com/que_es_el_apqp.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df67.bin
5814a0f0fabd021fa717e8b14a1eb6104ce687ceac0549e26e3b4f503e5fde84		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF67 5568 bytes
font_01_sfnt_off0000f228.bin
c4118e1e76b8f283e9477b9730a4b854d3b37ca9d2c8188638c774528a7ddc10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF228 10312 bytes
font_02_sfnt_off0001157e.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1157E 4324 bytes

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