Malicious PDF — malware analysis report

Static analysis result for SHA-256 737c82471fec4280…

MALICIOUS

PDF

70.2 KB Created: 2021-03-06 11:03:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7899164b4480f5909ccbaa68057e12a0 SHA-1: 9702e79311cd2ef11ecabd7520de26099519a4a9 SHA-256: 737c82471fec4280796d7a5f3a10764a5e5fd311f28e0a127fa5d3df9ea63de8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://golowaki.ru/award?keyword=singer+301+bobbin+case PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467017/normal_5fdbbbcdef326.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458614/normal_601acbe2b9455.pdfIn PDF document text
    • https://cdn.sqhk.co/wumerelup/9n3Tiik/samutopewezubi.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/eFhb4Q7/starbucks_drinks_to_try_iced.pdfIn PDF document text
    • https://cdn.sqhk.co/lewemimi/iahiPJl/instagram_search_account_name.pdfIn PDF document text
    • http://fisareboveda.getenjoyment.net/how_to_administer_the_ssi-4.pdfIn PDF document text
    • https://cdn.sqhk.co/sevijeruba/gchbYjc/how_to_play_blackjack_with_friends_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457570/normal_5ff2d28e85965.pdfIn PDF document text
    • http://tiluvopira.medianewsonline.com/87446828775.pdfIn PDF document text
    • http://rulabepotinujeb.mypressonline.com/what_is_a_single_member_llc_vs_llc.pdfIn PDF document text
    • http://ronifibofizet.medianewsonline.com/farmall_super_a_steering_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/fudamozomeb/zhgljad/my_cafe_restaurant_game_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bed1e925-73f7-457c-87ff-53f226988024.filesusr.com/ugd/d4a8ce_d20df6e76f8e42c28b8955debd47d008.pdf?index=trueIn PDF document text
    • https://dbba0f06-1911-40f0-8c80-a2638c7f81cc.filesusr.com/ugd/b13fd1_bf2f49561158470c860f2d9dea4bac4d.pdf?index=trueIn PDF document text
    • https://f27bca7f-571c-471d-9e77-92385e6dfcd0.filesusr.com/ugd/9a0fa1_b67fa86ac56d4b51b31f1c0abe19bf4a.pdf?index=trueIn PDF document text
    • https://d525ee04-2a40-494f-8ba9-fee52f7b18ee.filesusr.com/ugd/8b8e24_466a22c1022a47699253576bc546a647.pdf?index=trueIn PDF document text
    • https://276658a2-c6b1-4a23-bc3b-56c82bce4278.filesusr.com/ugd/f9448a_b262a2c37a6447d084849e642a9ab51b.pdf?index=trueIn PDF document text
    • https://0cc2a7d0-6f33-4335-9ec9-554d9418487e.filesusr.com/ugd/cb4a18_e8df39c8e2f8466c914b161d98954112.pdf?index=trueIn PDF document text
    • https://40e214c1-1950-44e8-a195-e2c6eeb23253.filesusr.com/ugd/a517f4_abc686ffa0894f128ae2c5a5b73fc559.pdf?index=trueIn PDF document text
    • https://c0b8f06b-4e98-4d3d-89ef-2f08caba629a.filesusr.com/ugd/0c8cc8_aed13b8603cb444b97cd90c27bc37250.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_off0000d5b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B6 5536 bytes
SHA-256: e267446c4ee373855b4ef3fc22a99339a84ba4078808f0da28a2fdc2098f063b
font_01_sfnt_off0000e898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE898 10176 bytes
SHA-256: 3bbe211985b3c84334b54c0bd1e36e880d3fc3612fec441e682378d89822705b