Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dc3b7fc41319092…

MALICIOUS

PDF

74.9 KB Created: 2021-03-05 10:43:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 2e70225ad2a5975a9db68be04d0cd13e SHA-1: 5fd1fd30cca7aaa8ce2a5a5cbbc06948c0597eab SHA-256: 8dc3b7fc41319092b0284ab84890faed3ff7f03c155ba8d10b4d35ee46c0b980
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with a primary focus on 'fokemale.ru', suggesting a lure to a malicious website. The PDF structure and embedded content are consistent with a phishing attempt designed to trick users into visiting a compromised or malicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://fokemale.ru/wix?keyword=daily+geography+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417988/normal_602b5e214d77d.pdfIn PDF document text
    • https://cdn.sqhk.co/nikofejujel/zNiaihk/peludifokenofizidofus.pdfIn PDF document text
    • http://it50off.pro/710376346440nooa.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/12040756654.pdfIn PDF document text
    • http://pobadabodoz.scienceontheweb.net/how_to_get_free_final_cut_pro_x.pdfIn PDF document text
    • https://cdn.sqhk.co/sofilita/hcjiaMo/sleeve_hitch_blade.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413851/normal_5ff17adcbed90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394061/normal_5fdc6f0a8079c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392658/normal_5fdb6f4919e59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456420/normal_5fed91c9666b0.pdfIn PDF document text
    • http://hook-up.fun/phng_vn_sacombank_bao_lu_th_c_kf6fle.pdfIn PDF document text
    • https://cdn.sqhk.co/tawibonikigo/5HEt9hj/marketing_definition_of_added_value.pdfIn PDF document text
    • http://vexoxem.scienceontheweb.net/83860388232.pdfIn PDF document text
    • http://xevamoz.mygamesonline.org/36_sub_zero_refrigerator_specifications.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/g5ggFo1/cosmo_and_wanda_halloween_costume.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c8a2bd7-6b30-4b4f-a7c7-e9f62f7d5572/hand_sewing_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a26e69a-873b-4028-85de-eb4f6bd4828e/vizuxuze.pdfIn PDF document text
    • http://vekisofekibote.myartsonline.com/anatomy_lessons_from_the_great_masters_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e62e46e4-fd5b-42ab-b5ea-6339ec6d73cf/27361140437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a237c04-68a1-4c45-9588-d84680528b16/68709485627.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7addbfc5-01c4-4469-b77e-e7b38e4ba950/how_to_get_a_cracked_minecraft_account_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d9407b4-02ff-4c20-9012-f78a103b8c95/how_to_use_construct_3_offline.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_off0000e782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE782 5272 bytes
SHA-256: 208b4c897cce07c6bbf430bbb8905cb7d33ed7c61f5e5adaf41ffae6edfccc74
font_01_sfnt_off0000f988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF988 11432 bytes
SHA-256: 3d97532074c454682cb22ebc51bf296e837a8d0e23d275d52c8d0af821a55328

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