Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bcd6ab6dc71043c…

MALICIOUS

PDF

79.5 KB Created: 2021-03-18 05:26:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 930c8cd3b1bb76e0ac35cd80e6eed9ef SHA-1: 7c193d1ebf7ffbab66fa6a3b282de7378477e2d7 SHA-256: 0bcd6ab6dc71043c4583e33eb58ff4a34f6a6105fa4a42a954c8f84679a0fe41
186 Risk Score

Malware Insights

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

This PDF document is identified as malicious by multiple heuristics and an ML classifier, including ClamAV's Pdf.Phishing.Trojan detection. It functions as a link farm, directing users to numerous external URLs, one of which is a known phishing domain. The document's content is a deceptive lure, masquerading as a search result to encourage clicks on these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://botokaw.ru/strik?utm_term=what+does+it+mean+to+dream+about+tree+plantations
    • https://voruvagozi.weebly.com/uploads/1/3/4/7/134742827/1325e4ab94.pdf
    • https://xidifapub.weebly.com/uploads/1/3/0/8/130873728/6882362.pdf
    • https://cdn.sqhk.co/gilubibawi/ykKiigf/mevetafetesafixetune.pdf
    • http://forpost-electrica.ru/waladovuda40svo.pdf
    • http://robertferrell.net/88740542651gqjx3.pdf
    • http://hargotel.xyz/how_to_remove_a_stuck_tape_from_vcr3x3u9.pdf
    • http://covid-19online.site/como_fazer_assinatura_digital_em_documentou8bti.pdf
    • https://cdn.sqhk.co/tedalome/7lHFjer/auto_thug_block_cities.pdf
    • http://yourdesk.website/jawegigujolekesadojufuurdd.pdf
    • http://bcpzon4segurabetaviabcp.com/building_triangles_worksheet3vtd7.pdf
    • http://copyrightsupporthelpcenter.com/kirugubaliwukivuxiwepigygj7.pdf
    • http://subbellassecret.com/genetics_book_by_veer_bala_rastogitkfbm.pdf
    • https://cdn.sqhk.co/sukonazukuv/jRgdhgl/nostalgia_gba_emulator_cheats.pdf
    • https://webegoxu.weebly.com/uploads/1/3/2/6/132682681/b039635267.pdf
    • http://ukrinsure.com/90461639399mpc0r.pdf
    • http://aazzzry.space/lalugimenefofapetamutiuew3.pdf
    • http://tevfikyuce.xyz/766886672128ix3m.pdf
    • https://cdn.sqhk.co/soxuvezosapa/iciiiie/33722927332.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://79e8b926-cc52-4cef-90ae-68e3990d752e.filesusr.com/ugd/694d5d_cc92ebf686d74d9aa0d48860c6a97bf9.pdf?index=true
    • https://383fd46b-cc41-47b7-9379-19c19d7bb1fe.filesusr.com/ugd/81c43a_d90442673a85469991999ac36ccf190c.pdf?index=true
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_2c2dc389d54649c4857e17ed82d2b138.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f644.bin
50adc0d40293ff067ce9cfc321625847c6b04145b22f364daed41e18f448060f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF644 5352 bytes
font_01_sfnt_off00010851.bin
a50b0facdb5963e2e0e995cc87b9447d6e9ffb0704e764cccdaf9c96d8284686		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10851 11236 bytes

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