Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fc64450bf818b44…

MALICIOUS

PDF

82.6 KB Created: 2021-03-20 04:18:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 440ccc33bebad2d46129aaad7e056317 SHA-1: cf28ebdf779330bd53497ded7adef34bca6408b4 SHA-256: 6fc64450bf818b444b9a33807846f5a6bce414a57071db31403c46bca6692f39
136 Risk Score

Malware Insights

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

The PDF file contains a high-severity heuristic indicating it's a redirector link for phishing, specifically a 'free-download phishing' lure. The embedded URL, 'https://gimoguvi.ru/123?utm_term=wrong+turn+2+full+movie+300mb', is presented as a download for 'Wrong turn 2 full movie 300mb', which is a common tactic to trick users into clicking malicious links. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the PDF structure itself facilitates the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gimoguvi.ru/123?utm_term=wrong+turn+2+full+movie+300mb PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451230/normal_6029c52b84970.pdfIn PDF document text
    • http://womumonafip.22web.org/123_magic_dvd_length.pdfIn PDF document text
    • https://cdn.sqhk.co/zikufivol/eUvLhjt/xovabani.pdfIn PDF document text
    • https://zuranuwazob.weebly.com/uploads/1/3/5/3/135332575/tamugugaketuraz_foligune_zozakidotoguvid_lenorem.pdfIn PDF document text
    • https://cdn.sqhk.co/gidetixi/hfhggfa/off_road_racing_games_for_ps3.pdfIn PDF document text
    • https://ranibifuvif.weebly.com/uploads/1/3/1/3/131381542/garifijawaguni.pdfIn PDF document text
    • https://cdn.sqhk.co/timugulirebu/gggfpic/bonutusikefe.pdfIn PDF document text
    • https://zikagedatudupoz.weebly.com/uploads/1/3/4/2/134266226/dozekubasagewek.pdfIn PDF document text
    • https://kekorozonositen.weebly.com/uploads/1/3/2/7/132710750/8687682.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374517/normal_602ce24c38d09.pdfIn PDF document text
    • http://wavigubozivud.22web.org/4217734865.pdfIn PDF document text
    • https://vidimepimexuja.weebly.com/uploads/1/3/4/6/134626803/3b414e69407abc.pdfIn PDF document text
    • http://xovitexi.iblogger.org/2005_ford_explorer_transmission_rebuild_cost.pdfIn PDF document text
    • http://nefetenebubuwid.iblogger.org/72729456680.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/dantes_inferno_canto_26_full_text.pdfIn PDF document text
    • http://vedeniw.rf.gd/which_book_is_good_for_chemistry_jee_mains.pdfIn PDF document text
    • https://s3.amazonaws.com/gekojulog/noco_genius_gb40_error_codes.pdfIn PDF document text
    • http://genufewewirim.rf.gd/nanudopapedovenope.pdfIn PDF document text
    • http://geperazal.epizy.com/turbo_chameleon_64_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/wikidafabiwofepusipejexep.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/aminoven_infant_10.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/dupowigese.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_off0001060c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1060C 5352 bytes
SHA-256: 58b4e24ade68fbb5eebc58025ef3266e4e65543246a8d7ca6deb07c89eb61e57
font_01_sfnt_off0001184c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1184C 10632 bytes
SHA-256: 7fbf69b30a6d89c547cf915b2279505d43688b4175c7e99e5f6dc29738a5bc28