Malicious PDF — malware analysis report

Static analysis result for SHA-256 487536ab51b68965…

MALICIOUS

PDF

69.0 KB Created: 2021-03-06 01:13:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8e6eb59d681aa72ae7be6e557d20a4b0 SHA-1: 9de8e126ed80f4d0aa6c4d8eb5c4338f0eca47fe SHA-256: 487536ab51b68965e19d0877b6f291e864fb103c3a60a5eb9a0f770f4af07229
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=organizational+behavior+kinicki+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4405430/normal_5fe5b92513c57.pdfIn PDF document text
    • http://kernig.store/how_do_sbir_grants_work904be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485696/normal_600b625e6e21b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481411/normal_5fc6b4937f7b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385862/normal_6002a2787511d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490251/normal_600be6b14fb90.pdfIn PDF document text
    • http://swast-group.website/limites_usuelles_des_fonctions_trigonomtriquese4pxk.pdfIn PDF document text
    • https://jaduxopedarev.weebly.com/uploads/1/3/4/7/134749363/gifuno.pdfIn PDF document text
    • https://kabulemumolitu.weebly.com/uploads/1/3/4/8/134869515/gigelurupebeda_bixutarewaseju.pdfIn PDF document text
    • http://hurleyshamburgers.com/gomifizadfrb1b.pdfIn PDF document text
    • http://moshon.space/is_samurai_champloo_based_on_a_true_storymwnzo.pdfIn PDF document text
    • http://semengergel.ru/pokemon_mystery_dungeon_explorers_ofzys85.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://14535e1a-360a-4d01-a655-fa33e115c80e.filesusr.com/ugd/b222ea_edcf3298ed8e43bb9ce7a848f9072ff7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/31609a92-26ef-451b-8a47-20b7cd8fde09/zobujebipejumerobipeji.pdfIn PDF document text
    • https://4c2674ec-1430-4cec-a455-d6a35d10586e.filesusr.com/ugd/38955b_257e3ae6dbca4ed88d3852a3dec06a15.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2905a397-a86b-4e22-a3b3-095747a88ca6/66392881547.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6862d5e7-7aa8-483b-bb72-28791d6d83c3/how_do_i_fix_my_keyboard_not_typing.pdfIn PDF document text
    • https://fa202315-5cd5-4006-9a99-7c5d4406650e.filesusr.com/ugd/61804c_9a66170e454e43b0866231d77e109a9f.pdf?index=trueIn PDF document text
    • https://4c2674ec-1430-4cec-a455-d6a35d10586e.filesusr.com/ugd/38955b_0558af9c174e47c382e57b46bba15dde.pdf?index=trueIn 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_off0000d211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD211 5580 bytes
SHA-256: 9e9576389eff658af40e42e1a38531690e9138362721c9e9907dcf97154984f7
font_01_sfnt_off0000e510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE510 9960 bytes
SHA-256: f7575a3744ea5eb03ed426f2af7ceccba80639e5967c5fb5d430b2dcf441980b