Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f23e60aecb1fe38…

MALICIOUS

PDF

76.3 KB Created: 2021-03-03 07:02:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ec9e4c2dc73fdf959e4cb58dd9142243 SHA-1: 00f043470a5f224201e4fb2300e1736c3a951b54 SHA-256: 4f23e60aecb1fe38e9581e353b08071f999bf7bc375ee43517b40d9e9e2ef2a6
166 Risk Score

Malware Insights

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

This PDF file contains multiple embedded URLs, with a high-confidence heuristic flagging a link to 'privateguardingserviceagainstdanger.site' as a random, algorithmically-generated URL. The document body, though heavily obfuscated, suggests a lure related to obtaining a car title. The presence of numerous links and the ML classifier's high score indicate a malicious intent, likely to redirect users to phishing sites or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://botokaw.ru/award?keyword=como+sacar+el+titulo+de+un+carro PDF link annotation
    • http://nebofonuve.mywebcommunity.org/sogog.pdfIn PDF document text
    • https://cdn.sqhk.co/pevelefotuve/BPDCcja/power_rangers_legacy_wars_mod_apk_obb_download.pdfIn PDF document text
    • http://drovazvenigorod.ru/62966146646lwiws.pdfIn PDF document text
    • http://privateguardingserviceagainstdanger.site/17_day_diet_recipes_cycle_1_lunchrqxbw.pdfIn PDF document text
    • http://losinglotterynumbers.com/cch_lm_hiu_ng_lt_trang_sch_trobt37j.pdfIn PDF document text
    • http://vodoroding.info/wilazamodimuvadokomagififojmwf.pdfIn PDF document text
    • https://cdn.sqhk.co/wamiratena/cGhgii3/44165102530.pdfIn PDF document text
    • http://damvglaz2.xyz/diodes_in_electronicssukvn.pdfIn PDF document text
    • http://trylait.club/15170514519v5thi.pdfIn PDF document text
    • http://probnik1313.tech/windows_10_editor_downloadtlu2d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://noxisalezupob.epizy.com/sunnyvale_vw_service_coupons.pdfIn PDF document text
    • http://muloluj.rf.gd/16243259951.pdfIn PDF document text
    • http://nevozabewovezo.epizy.com/96167128202.pdfIn PDF document text
    • http://toxisokipefofo.epizy.com/vipomof.pdfIn PDF document text
    • http://bavigozobuk.rf.gd/isaimini_english_movies_2019_in_tamil.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_off0000ed4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4C 4992 bytes
SHA-256: 8057a6b122833aad610aa79b0441e7b0c42ed2eeb520b5ee4cbd87bc3a368a0a
font_01_sfnt_off0000fe21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE21 11128 bytes
SHA-256: 117d4464968b2fc78180a4f5d7b57f2c6477562286efd173e48a944e5b3209eb

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