Malicious PDF — malware analysis report

Static analysis result for SHA-256 19fad59a06d7a5a2…

MALICIOUS

PDF

76.2 KB Created: 2021-03-15 15:02:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 549b93dc306e3885fec948ebac318dc8 SHA-1: 3459e7e825390d6f2fc52f6da0f9346e51c3aba7 SHA-256: 19fad59a06d7a5a2417c184e999c1f918e0fc26f0477c526bf3ff4a94fdb37bc
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs, with a primary one pointing to 'https://seumenha.ru/award?keyword=denver+broncos+2020+schedule+pdf', suggesting a phishing lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this by identifying the PDF as a link farm on disposable hosting, likely to redirect users to malicious sites. No scripts were extracted, but the presence of multiple external links strongly suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://seumenha.ru/award?keyword=denver+broncos+2020+schedule+pdf PDF link annotation
    • http://youtube-subscribes.com/dulokiserupirun63.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/pAgdCnR/takeout_restaurants_by_me_now.pdfIn PDF document text
    • http://reduslim-siteofficial.site/why_is_twilight_eclipse_rated_pg-13jb3go.pdfIn PDF document text
    • http://options.expert/63658410797j7kq9.pdfIn PDF document text
    • https://cdn.sqhk.co/kurapobal/JUgijbd/e_l_pet_insurance_continuation_claim_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480414/normal_5fd0f4a035805.pdfIn PDF document text
    • http://golden-bridge.pro/telugu_sex_stories_downloadn3spy.pdfIn PDF document text
    • https://cdn.sqhk.co/zosurinipin/fibjhA6/59382491173.pdfIn PDF document text
    • http://topcreditcheck.info/wenurorupopefelikumobi6a06o.pdfIn PDF document text
    • http://pugaxosojusi.22web.org/nesquik_strawberry_milk_bad_for_you.pdfIn PDF document text
    • http://xruhdfo.site/59054017928wwqi6.pdfIn PDF document text
    • http://alcexpress1.xyz/you_have_the_right_to_remain_innocent_audiobook_downloadtna70.pdfIn PDF document text
    • http://workbykoder.xyz/plantronics_bluetooth_headset_service_center_in_coimbatoretu0sz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488807/normal_5fd0914d7f5b4.pdfIn PDF document text
    • http://stroymarketmetal.ru/crew_neck_soccer_t-_shirt_mockupxindm.pdfIn PDF document text
    • http://opensol.xyz/ansul_fire_suppression_system_trainingfbd9b.pdfIn PDF document text
    • http://m-ryanaf.site/juwelutuxuk5vw8.pdfIn PDF document text
    • http://pumexewutide.22web.org/arris_tg862_firmware.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417312/normal_5fcfaa34d7f96.pdfIn PDF document text
    • http://trokot-tonirovka.online/all_whole_exerciseskfi6u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://madanekobovuge.epizy.com/classification_of_angina_pectoris.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_off0000ecdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECDB 5508 bytes
SHA-256: 24e4e92cb80906983772c6bf5d4a58cafa198f2a2db95c359a3a0135a86b86e7
font_01_sfnt_off0000ffa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA0 10484 bytes
SHA-256: e40a583a2299797dbe8d22a1a4b6f13a983a2e2fa0a5da1ef792fbf2aebe4579

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