Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f760f5d1d4aabe6…

MALICIOUS

PDF

71.7 KB Created: 2021-03-30 21:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 785a0eb46dd382e35bc06427ec24c1b2 SHA-1: edf74a4be8591c1d2fdd908f648027fb44bdfa24 SHA-256: 6f760f5d1d4aabe6abd87edf01be9dba7d66676c72514f00691dd96906dcc6f3
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, with a primary focus on `https://soxebez.ru/strik?utm_term=1992+evinrude+9.9+service+manual`. The heuristic `PDF_SEO_DISPOSABLE_LINK_FARM` indicates a pattern of using disposable hosting for link farms, suggesting a malicious intent to distribute or redirect users. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or malware delivery.

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://soxebez.ru/strik?utm_term=1992+evinrude+9.9+service+manual PDF link annotation
    • http://mkuu.club/vofeditevudivabejezitiju6towd.pdfIn PDF document text
    • http://pe50off.info/dugigafobuvugodezufimuta2dgl.pdfIn PDF document text
    • https://cdn.sqhk.co/kekumumaxow/ehiOjeZ/fizodebuzar.pdfIn PDF document text
    • http://uanews.website/consumer_reports_used_cars_2019mjdrb.pdfIn PDF document text
    • http://affilateapp.online/can_you_use_ps_vita_games_on_ps4ofi1n.pdfIn PDF document text
    • https://cdn.sqhk.co/xororasomig/M20Rsii/father_and_son_days_out_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/vavapezami/hejijf5/58249175559.pdfIn PDF document text
    • https://cdn.sqhk.co/bajowekununa/ggiBhap/radio_5_live_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/razilipot/jijsA43/iranian_calendar_year_2019.pdfIn PDF document text
    • http://alisabor.design/wetirazumip508pm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://627ea4a7-3f28-4bf3-8c99-6a9da7dacf48.filesusr.com/ugd/1970e2_c47708d458db4004b9c92f1014e5fbe7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/seriposuj/rawapiwotijaw.pdfIn PDF document text
    • http://lovibora.epizy.com/date-_fns_format_unix_timestamp.pdfIn PDF document text
    • http://musizaxodolof.epizy.com/fezorilolu.pdfIn PDF document text
    • https://1d812fcc-cfc3-4558-a870-56fc5b7f4c2e.filesusr.com/ugd/754d94_3b65099a5fe7474f99a14600b524565f.pdf?index=trueIn PDF document text
    • http://fopaguduvogo.rf.gd/nazm_hikmet_vasiyet_iiri_oku.pdfIn PDF document text
    • http://lejibunigazaxa.epizy.com/basic_excel_formulas_list.pdfIn PDF document text
    • https://bff5fdab-9fd0-4670-908b-a1308bb5a9cb.filesusr.com/ugd/227d0f_7491113739fd482da979b8cd3b34427c.pdf?index=trueIn PDF document text
    • http://xizevobawilu.epizy.com/the_big_pink_a_brief_history_of_love_review.pdfIn PDF document text
    • http://jidabalelibixu.rf.gd/tor_browser_bundle_for_windows_10.pdfIn PDF document text
    • http://kabitivawenavox.rf.gd/scheer_platform_on_immigration.pdfIn PDF document text
    • https://141ebdc9-a3c9-4c6d-b8f9-366dbf139dec.filesusr.com/ugd/46bfb0_c39825df9985457680cdee47847c57f0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mukutud/pigabosatopedaxotib.pdfIn PDF document text
    • http://tiwinifo.epizy.com/49624491336.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/jorinegu.pdfIn PDF document text
    • https://6448a590-b571-4b71-a9e4-820b8531b153.filesusr.com/ugd/782be2_a184379b5d284647bd9f5c479aad0217.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/nizaviwijisumopujexut.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_off0000db1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1F 5420 bytes
SHA-256: 300ee0d451ae8aed752244c41b2cb77953430620bd3f2de1a67122c10f39db8b
font_01_sfnt_off0000ed84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED84 10392 bytes
SHA-256: acf0d050c2a4f2e8033cb5a0d57c3a8bd770cb6dff5572d25fa606c2e6cdaeb2