Malicious PDF — malware analysis report

Static analysis result for SHA-256 047df467d0007f9a…

MALICIOUS

PDF

76.7 KB Created: 2021-02-16 13:08:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5331df259535f23fd30fd46cf183b2b3 SHA-1: d7df435aa00415b8d427bbadc2496576513e41f6 SHA-256: 047df467d0007f9a77b40f860855f7d60c6d23e6b73a39b0b1d88866607cb5a5
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/wb?keyword=powershot%20sx510%20hs%20review PDF link annotation
    • https://cdn.sqhk.co/sofizagumup/jg6VgeS/apowersoft_free_online_screen_recorder_crack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486036/normal_5fd96837d1095.pdfIn PDF document text
    • http://digitalmicroteter.xyz/vezafanomunuvogevalugixuz92att.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370088/normal_5fdd69018f681.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491173/normal_6003e662cc857.pdfIn PDF document text
    • https://cdn.sqhk.co/mewixamok/hiJhfgD/kogama_world_racing_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/mogd3gj/bypass_android_pattern_lock_screen_using_cmd_2015.pdfIn PDF document text
    • https://cdn.sqhk.co/wekababu/8jeKgjC/junior_project_manager_jobs_denver.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/ggPdb8g/zombie_break_skins_4_minecraft_pe.pdfIn macro / runtime command snippet
    • https://jowesezowu.weebly.com/uploads/1/3/4/3/134366841/dinatokimugove.pdfIn PDF document text
    • http://liketime.online/grundig_s450dlx_wont_turn_onsbldp.pdfIn PDF document text
    • http://varnisvakq.ru/20432668308kfmpo.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/hAgjIO3/94136921622.pdfIn PDF document text
    • https://cdn.sqhk.co/wekababu/8jeKgjC/junior_proIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rubaporejolo.rf.gd/annamacharya_keerthanalu_audio_songs.pdfIn PDF document text
    • http://xibunagevidaze.rf.gd/life_is_never_perfect_quotes.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_off0000f01e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01E 5068 bytes
SHA-256: 3b58f4558802668ce6210e129ef682e438bb128384f4fb2b35561c927428c861
font_01_sfnt_off00010184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10184 10728 bytes
SHA-256: a28a3eda9ec3f7c66f8baae094b42df22b028d27fb3e1cd3ae3fd05aa6584777

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