Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3399cb6f885b264…

MALICIOUS

PDF

68.8 KB Created: 2021-03-30 19:56:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 010ac04eaa65577ad3100bd75bfd9d94 SHA-1: e034b1a1e7eff5f55f57c6a215597bc8c38e28bb SHA-256: f3399cb6f885b264dbfcd46aa3bbcd53631fd0084a902515f365617246acc00f
126 Risk Score

Malware Insights

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

This PDF file 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 a link farm hosted on disposable domains, suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, appears to be a lure related to a 'kosher nosh guide'. No scripts were extracted, but the overall structure and URL distribution indicate a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://maypoin.ru/123?utm_term=klbd+kosher+nosh+guide PDF link annotation
    • https://cdn.sqhk.co/kiwametin/jal8YmN/phelsuma_ornata_care_sheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467571/normal_601ae021038e2.pdfIn PDF document text
    • https://cdn.sqhk.co/lutadamafe/jbcujdN/52019773407.pdfIn PDF document text
    • http://wiinorama.space/21112838317pn4hh.pdfIn PDF document text
    • https://cdn.sqhk.co/rubekafux/1jigxgj/glass_tower_mobile_game.pdfIn PDF document text
    • https://cdn.sqhk.co/tibazafex/hhuhdgd/44027472865.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/fvH2hi4/microbes_war_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/tekuligote/hcygehh/snappy_nails_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/xezakomujar/bshcOjg/superjare_dual_monitor_stand_riser.pdfIn PDF document text
    • https://cdn.sqhk.co/kevejonob/Rimjavg/tagirabixuxuxorurokaf.pdfIn PDF document text
    • https://cdn.sqhk.co/sadopore/gjj3ilc/amazon_fire_stick_remote_replacement_target.pdfIn PDF document text
    • http://wiregabjuk.fun/67490639116w18d0.pdfIn PDF document text
    • https://cdn.sqhk.co/daviluzabidi/uCgiCje/ruzikalulo.pdfIn PDF document text
    • https://cdn.sqhk.co/gefisodir/jijjpgd/homemade_ice_cream_recipe_without_raw_eggs.pdfIn PDF document text
    • http://brosbass.com/navusupetujuvpjcms.pdfIn PDF document text
    • http://wersita.fun/meteruwewosa4ueo3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374376/normal_5ff531246887a.pdfIn PDF document text
    • http://sandwichhq.club/585953473650lapr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b5c318d-71c1-4259-818b-21115c1efa0c/wusevovawujen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80cb86fe-f0dc-4681-b67a-1d9f55c7635c/42446516940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0dc64f3-7966-42c2-8f37-8e15b118c041/dolaladamikodor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26cebed8-5ea9-437f-9261-531bf0d411a3/72194654766.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d26b297-5ff7-48f4-9231-aca89b5191bb/33722229961.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_off0000d341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD341 5052 bytes
SHA-256: cd721fcfadd1ffd6043d296f8112fd0c10fccc5a201e2cefba55dd0b27726daa
font_01_sfnt_off0000e461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE461 9872 bytes
SHA-256: e128593db5c77787169716cf9785e0b6bcc7902a25e5cfe796c0c29a89d2cc8b

Open this report in the interactive analyzer, or submit your own file for analysis.