Malicious PDF — malware analysis report

Static analysis result for SHA-256 861de90b8987a696…

MALICIOUS

PDF

70.4 KB Created: 2021-03-07 07:05:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5974483aec2b2ee582039162c2b9e603 SHA-1: 5b117240bd70de619dcb31ecfa9f9595e7f7fedb SHA-256: 861de90b8987a696b243dc53dc61ff42ae405db01b87f4b121e833ed7911ebff
136 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
  • 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://golowaki.ru/award?keyword=bose+remote+control+code+for+samsung+tv PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4427820/normal_5ff0b3938b98e.pdfIn PDF document text
    • https://sixutaxujarupi.weebly.com/uploads/1/3/4/8/134882582/6233138.pdfIn PDF document text
    • http://kelnoteres.xyz/6544912489vy1m7.pdfIn PDF document text
    • http://reabook.online/1st_year_biology_notes_free_downloadveybm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452852/normal_602126c4ea057.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365575/normal_5fdf63232b309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495251/normal_602c5d8fb48e0.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/fojatepa.pdfIn PDF document text
    • https://cdn.sqhk.co/padasagam/1nlQ4ie/snake_in_spanish_slang.pdfIn PDF document text
    • https://cdn.sqhk.co/xopuwomu/h7gYM2y/21165890147.pdfIn PDF document text
    • https://bafizotadax.weebly.com/uploads/1/3/4/7/134761596/letokim-setivegodu-kufuse.pdfIn PDF document text
    • https://fugopezawisobib.weebly.com/uploads/1/3/1/3/131383650/fazewusoxu.pdfIn PDF document text
    • https://cdn.sqhk.co/vilubofi/dwn3jdv/call_me_emperor_game_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/dafisuwikib/abmiejF/golunujum.pdfIn PDF document text
    • http://fapseo.ru/is_r_important_for_data_sciencelh8l9.pdfIn PDF document text
    • https://cdn.sqhk.co/nejajevafode/x3iaNCY/duwiwijewogunu.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/zopenave/49979471989.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/78267839737.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/fezurivumexefeloxel.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/how_to_convert_mini_dv_tapes_to_computer.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_off0000d6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D3 5452 bytes
SHA-256: 60912058baf8b220e44675957247a7f905f63a29d9f18cf4d230a536b8d4d042
font_01_sfnt_off0000e950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE950 10196 bytes
SHA-256: d3e65a1bccfbbce9f4bc8ddbeff0f214ffae0d07786018527dc07f41afbfdefe

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