Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f61bcbc364b90c…

MALICIOUS

PDF

69.1 KB Created: 2021-02-26 20:42:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a4d4da3eb693b99c9ada092dce3e3762 SHA-1: b985c3d1c4d50ad4776d9d3613c4246bf2520384 SHA-256: d7f61bcbc364b90cc7605f74db6020a156e2e233fd43654dbf125341069f4cca
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/award?keyword=toyota+camry+for+sale+in+sa PDF link annotation
    • https://cdn.sqhk.co/fonixoligem/CjiKBgi/kamisato_ayaka_genshin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489848/normal_6005487b1db44.pdfIn PDF document text
    • http://mangalvpodarok.ru/how_to_change_chain_on_poulan_chainsawgvzvk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369665/normal_5feea27770477.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388178/normal_602f71d04f4c3.pdfIn PDF document text
    • http://instahelpforbusiness.com/358715700357azw.pdfIn PDF document text
    • http://bahis-sikayet.com/traffic_rider_3d_lite_mod_apkegr2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416144/normal_5fc796ed42544.pdfIn PDF document text
    • http://goodxday.xyz/final_fantasy_xv_ps4_digital_codec1yhz.pdfIn PDF document text
    • http://mnogoturov.com/galumosoxovaju9fblk.pdfIn PDF document text
    • http://regsenatvumen.website/how_do_i_transfer_my_drivers_license_to_arkansasgx0rc.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/zafuna.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vebisop/texevubara.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/starfinder_books_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/jokumujibafadofigosebapaf.pdfIn PDF document text
    • http://wonanikapudidak.atwebpages.com/diablosport_intune_i1000_vehicle_list.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/72821430960.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/varevixorilanoxi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c84c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC84C 4868 bytes
SHA-256: 93c1460c1544c3371b707019d37ed63e7c4ecea21093d030b94951eadd6f5645
font_01_sfnt_off0000d8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BC 9428 bytes
SHA-256: f20dd1f4f6230c0aedad52a1aef03aa1b608fdda068ac85b0475984c820b4a8c
font_02_sfnt_off0000f8ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EC 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e