Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 21066f244f4c7706…

MALICIOUS

PDF / .VIR

81.5 KB Created: 2021-04-30 20:03:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2024-07-13
MD5: b61b86cf3194a4889484d4ba5f9bb9f8 SHA-1: 0f41b9c4f09476c936868b4f2d6b99971ac20429 SHA-256: 21066f244f4c770696f47d5284a99c48ced94fe4d7db8361de8ab18157988ca1
271 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 8

  • 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 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.
  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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 http://detonic-italy.website/nasewukuvirenowiglkc0u.pdf In PDF document text
    • https://pesowisigafu.weebly.com/uploads/1/3/0/7/130739627/2282884.pdfIn PDF document text
    • https://nokibuvekunel.weebly.com/uploads/1/3/1/1/131164430/vivowutubup.pdfIn PDF document text
    • http://onlineeshop24.xyz/star_trek_beyond_krall_actor7b97x.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/what_is_the_social_contract_theory_in_government.pdfIn PDF document text
    • https://fofodivadi.weebly.com/uploads/1/3/4/8/134895081/faliwedajusomezup.pdfIn PDF document text
    • https://vokarojunez.weebly.com/uploads/1/3/2/6/132696330/zilirajakuzeporaxew.pdfIn PDF document text
    • https://cdn.sqhk.co/wofosinewok/2iibii0/1_clue_words_and_syllables_level_12.pdfIn PDF document text
    • http://airet.space/how_to_program_g_shock_50810ftcv.pdfIn PDF document text
    • https://lezanixopedem.weebly.com/uploads/1/3/4/8/134886347/zupivuleximof.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/former_columbus_blue_jackets_players.pdfIn PDF document text
    • https://cdn.sqhk.co/fovomesit/ihaZKhh/letinojuzulin.pdfIn PDF document text
    • https://cdn.sqhk.co/geruxibab/hhggehg/subway_endless_runner_games_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/17348465261.pdfIn PDF document text
    • https://cdn.sqhk.co/tusadopovet/6mjcm3h/26372414461.pdfIn PDF document text
    • https://mesajenijapab.weebly.com/uploads/1/3/0/9/130969967/liregumusukuwunul.pdfIn PDF document text
    • https://bologen.ru/strik?utm_term=do+non+essential+amino+acids+contain+nitrogenPDF link annotation
    • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off0000f343.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off0000f343.bin)
    • 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
    • https://savannah.gnu.org/projects/freefont/In extracted file (font_00_sfnt_off0000e25c.bin)
    • http://www.gnu.org/licenses/In extracted file (font_00_sfnt_off0000e25c.bin)
    • http://www.gnu.org/copyleft/gpl.htmlIn extracted file (font_00_sfnt_off0000e25c.bin)
    • http://scripts.sil.org/OFLIn extracted file (font_01_sfnt_off0000f343.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e25c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25C 6744 bytes
SHA-256: 0eac1552a6a0cc8d6d43e14f5c157d052ff2bf21460314f67a2c213e0a454e63
font_01_sfnt_off0000f343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF343 5260 bytes
SHA-256: d41be357db869a3c2769cf56ba3708c62edf7147a3fbac37bf39848c87c18d96
font_02_sfnt_off00010502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10502 2252 bytes
SHA-256: a6a8686b8fb15c9717d15c6992f5cb6599fab98c9eb18a738509255b94a7d84e
font_03_sfnt_off00010f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F42 11512 bytes
SHA-256: d1705609dd2ac6a12f85eca1905c17752aea0f010719155ab6debed386ed4a9d