Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3a456988d2b00fa…

MALICIOUS

PDF

72.9 KB Created: 2021-03-05 07:18:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d55a1f7eb71f8872e5187b8cd9bdfc14 SHA-1: aaf333c0cd289754c915b2f98a9c2d4bbecbe933 SHA-256: a3a456988d2b00fa63149cec18f9a760fa11ec03a1d7cabf8bf42f21f728fc14
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://nipisod.ru/award?keyword=whats+another+word+for+fellow+citizen PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416789/normal_5ff1e9de9c916.pdfIn PDF document text
    • http://vexetifiridik.mypressonline.com/55689545381.pdfIn PDF document text
    • http://zodazaze.22web.org/android_tv_box_vs_smart_tv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450724/normal_60255c47c2b1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369777/normal_5fc869fdcb308.pdfIn PDF document text
    • http://lezobul.medianewsonline.com/can_we_do_image_search_in_google.pdfIn PDF document text
    • http://paxezot.getenjoyment.net/golf_is_not_a_game_of_perfect_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380536/normal_6018381be96c6.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/fisher_paykel_fridge_freezer_reviews.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/polycom_soundstation_2w_wireless_setup.pdfIn PDF document text
    • http://gifinibufenatar.medianewsonline.com/45029148740.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gifesikubelazu.epizy.com/benevolent_fund_form_punjab_2018.pdfIn PDF document text
    • http://nomapalugaji.epizy.com/nazikoboture.pdfIn PDF document text
    • http://bumilamufitilu.epizy.com/31942814841.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e04606b-790b-4d12-9af3-d866af9b00f6/76337930927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bb8c9b4-3102-428a-8ae2-67361d3979a4/86153064346.pdfIn PDF document text
    • http://tewojaxosu.rf.gd/stihl_fsa_57_lithium-ion_cordless_grass_trimmer_bundle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8bd120b-54c3-4f08-b6be-d44015d9a165/25_hp_johnson_outboard_motor_wiring_diagram.pdfIn PDF document text
    • http://nonogopikizezed.rf.gd/pomupiwegepuz.pdfIn PDF document text
    • http://wizerojagapez.rf.gd/who_is_considered_immediate_family_for_bereavement_leave_walmart.pdfIn PDF document text
    • http://samitis.rf.gd/10569622355.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_off0000ddca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDCA 5264 bytes
SHA-256: 50fb9ea2e9f10db4e7e369220414edc087fad644b422aba0c2b3997383527539
font_01_sfnt_off0000efce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCE 11356 bytes
SHA-256: b0c751abd92cc714184258ebe7aaf0e3e48e30cfb6048aeb3152eb0d0887553e

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