Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f4fba592918d0c…

MALICIOUS

PDF

72.7 KB Created: 2021-02-23 02:10:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8fd74d4e1c34819ce5b99d33479aa0dd SHA-1: ea1a38137c1745234501c95ff80645e4b1ab40e3 SHA-256: 93f4fba592918d0c3cf0dc84e4fdce5372ff29e5f81b1d16a27797c47163bb50
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=crystal+pony+royale+high In PDF document text
    • http://yandex-delivery.cc/7092299226fp00m.pdfIn PDF document text
    • https://jubibesu.weebly.com/uploads/1/3/1/3/131379113/lekekemafo.pdfIn PDF document text
    • https://cdn.sqhk.co/sirepajaku/lh6kCig/fundamentals_of_financial_management_concise_9th_edition_powerpoints.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/jiYiiia/presidential_election_2020_fun_arcade_race_results.pdfIn PDF document text
    • http://sodaapp.pro/free_printable_weight_loss_graph_templatezpeoe.pdfIn PDF document text
    • https://cdn.sqhk.co/rorazelesu/haP2Nhi/tomtom_sports_connect_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495525/normal_60108e4362b5b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365662/normal_5fdeaffd5ca8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459784/normal_6008eb10d796a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452837/normal_60315aea2fc42.pdfIn PDF document text
    • https://regakoxunurur.weebly.com/uploads/1/3/4/3/134380337/95d065c692f2f7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417992/normal_5fda5fa239038.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374540/normal_6000419971dae.pdfIn PDF document text
    • https://galujamisone.weebly.com/uploads/1/3/1/8/131871568/26bd104237f3712.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/57jdUOP/zuponigexizoxuvekesuzomul.pdfIn PDF document text
    • https://govabegos.weebly.com/uploads/1/3/4/0/134018252/pavile-zavawakika-winuwelem-zazetoda.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/nodetuxapabara/90993218475.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/js_ajax_post_form_data.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_off0000e06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06B 5088 bytes
SHA-256: d3bae7bdc57ee969b29fae3625624c9e891d7efa08500d9646e1d061447d20b3
font_01_sfnt_off0000f1b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B9 10476 bytes
SHA-256: 1696d82ad3ea58d2cf3f4503339f2ff34bf4eb48de8fd094b71da9e39768666e

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