Malicious PDF — malware analysis report

Static analysis result for SHA-256 7abd57734e2a5051…

MALICIOUS

PDF

72.0 KB Created: 2021-02-26 20:55:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 99fe3bb496ed3d7ad2522023a5ee3981 SHA-1: 41f896dd3af64c8e606b9a018f8edd1543b48921 SHA-256: 7abd57734e2a5051dbbc712ee3825521797590ed7bb52a8c060e48baa07747c6
196 Risk Score

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
  • 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.
  • 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://seumenha.ru/wix?keyword=omegle+videollamada+apk PDF link annotation
    • https://vukojudal.weebly.com/uploads/1/3/5/3/135317211/7837591.pdfIn PDF document text
    • https://cdn.sqhk.co/nezerozara/tc7gcVH/chuzzle_2_online.pdfIn PDF document text
    • https://cdn.sqhk.co/wupofolizaj/hagijjG/best_rechargeable_flashlights.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwadezab/04gjaij/yandex_keyboard_apkmirror.pdfIn PDF document text
    • https://cdn.sqhk.co/kamozipu/b9hgfvh/32452898517.pdfIn PDF document text
    • https://cdn.sqhk.co/wepigosogo/Jggqoja/nopolofosi.pdfIn PDF document text
    • https://cdn.sqhk.co/leporolino/VGVEjhI/html_code_m3u_player.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/2ihgjgf/12676007532.pdfIn PDF document text
    • https://cdn.sqhk.co/nemazuwigumo/eGe0YVc/rdr2_companion_graves.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/nitidadufetenu/carte_ter_auvergne_rhone_alpes.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/31983852949.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/jutozimifupojaxe.pdfIn PDF document text
    • http://ginokaze.epizy.com/acog_guidelines_for_induction_of_labour_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/83041196315.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/22778395988.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/how_to_charge_my_stanley_power_to_go.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/how_do_you_use_a_bug_detector.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_off0000de6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6C 5156 bytes
SHA-256: ae152ef8d10af4d2e90737c9947d67c65bdac102fc28f23e2e21adfd1b158351
font_01_sfnt_off0000eff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF0 10240 bytes
SHA-256: 2114515738c5ec1ac5444ccce39fe580e8962992a01bc2c8d1bca1c7993aa8fc

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