Malicious PDF — malware analysis report

Static analysis result for SHA-256 3660a578d629a5e6…

MALICIOUS

PDF

72.8 KB Created: 2021-03-13 22:09:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 21f41fa45a27c6fc60bd8be1b0a597e2 SHA-1: 5280bc0ce67954f46eb70b76eac47857a515445c SHA-256: 3660a578d629a5e6599ee7d3ad11570fd944d1df7e63f389a17baf4359d80bbd
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs, with a notable one pointing to 'soxebez.ru', suggesting a phishing or malware distribution lure. The document body, though heavily obfuscated, contains text related to 'Emulator ps3 android offline', which is likely a pretext to entice users to click on malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://soxebez.ru/123?utm_term=emulator+ps3+android+offline PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417406/normal_60026799d5285.pdfIn PDF document text
    • http://vabebimubu.iblogger.org/55579909024.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445889/normal_5fdf7fca21bc9.pdfIn PDF document text
    • http://porn77.design/magibisezoresodapekei913o.pdfIn PDF document text
    • http://pubafagare.22web.org/litujorivudaza.pdfIn PDF document text
    • http://wamuwosola.mygamesonline.org/godiduwajiguwizutunupis.pdfIn PDF document text
    • http://centerverifybadge.com/hp_elitebook_8540w_price_in_nigeriaww55h.pdfIn PDF document text
    • http://miiliioner.xyz/tn_guideline_value_maduraiccr20.pdfIn PDF document text
    • http://creditscoreusa.info/dodiraugdn.pdfIn PDF document text
    • http://vololagabedopi.22web.org/brunner_and_suddarth_11th_edition.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462993/normal_5ffb807d8764c.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/development_of_psychological_assessment_in_south_africa.pdfIn PDF document text
    • http://vawadofofasip.getenjoyment.net/rd_burman_songs_list.pdfIn PDF document text
    • http://bit7.top/diagrama_de_fases_agua_purapht8b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nedomovoguluz.rf.gd/tenuludozuti.pdfIn PDF document text
    • https://db7841a4-af10-4990-a2be-f084cd4acbf6.filesusr.com/ugd/e3c460_bba37b9f1b744288aa71c773fcaccb8a.pdf?index=trueIn PDF document text
    • https://321e46d8-a3e9-4523-905f-b0dcd1dcb7ef.filesusr.com/ugd/29fbc3_c8819fb9a195497ead566b6632dc9dae.pdf?index=trueIn PDF document text
    • http://vobozezojip.onlinewebshop.net/21786170201.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5373e68-30e6-4d42-a0d3-64731095ba65/19639095917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e809c4f-873b-40ed-a97f-a374795737ed/31741436139.pdfIn PDF document text
    • https://eb62986f-0112-409a-9ebe-777412bc5c19.filesusr.com/ugd/26938b_1f71deb196a84802a564b1186d1ff163.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5719cf53-c9a0-4c47-884f-232ca8bd6c7c/pictures_of_the_ugliest_cat_in_the_world.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9032d066-e76e-4312-af71-16bf2b71cde9/minn_kota_riptide_80_parts.pdfIn PDF document text
    • https://1ce8651a-bfbb-4b9a-b1bf-24b3b574775a.filesusr.com/ugd/ac72e0_4b450bdd4b3f4507b63d2b570c9b5ebf.pdf?index=trueIn PDF document text
    • http://wivonubezur.epizy.com/joker_harley_quinn_hd_wallpaper.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_off0000df89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF89 5308 bytes
SHA-256: 3ac5afae2c810a78973a97d6e7059987544752c5877799b3ca063d6228b19852
font_01_sfnt_off0000f17c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17C 10456 bytes
SHA-256: 3c475f9606815254058bc1d7f068d23e1e282fc380f787fbc9cc39ea085ab0b1