Malicious PDF — malware analysis report

Static analysis result for SHA-256 5afce6424691d5b6…

MALICIOUS

PDF

79.2 KB Created: 2021-03-07 13:10:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 52ffe770b94c80258bb48a86dd3fe51b SHA-1: a610554858e5ee5f7262728eeff4a910d9855f88 SHA-256: 5afce6424691d5b60be45523abd718385881a59a7599c98978d4f8c8a6e9f108
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://gimoguvi.ru/wb?keyword=2017%20boy%20scout%20handbook%2013th%20edition%20pdf PDF link annotation
    • http://vuzuwul.getenjoyment.net/12272375501.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/geneDig/snowball_fight_game_math.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408001/normal_602f865a6f696.pdfIn PDF document text
    • http://lixodamevurobar.mygamesonline.org/cuantos_cm_tiene_un_metro_cuadrado.pdfIn PDF document text
    • https://cdn.sqhk.co/nizufalagef/Nja0Khe/15154102963.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/gia1hhI/the_wild_darkness.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465147/normal_601da796de84d.pdfIn PDF document text
    • https://cdn.sqhk.co/remowiwa/jiHibie/lovescapes_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tevotapomow/hIihjhy/sniper_ghost_warrior_contracts_review_gamespot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2a1457bb-a4d2-449b-8914-d784a503a6da.filesusr.com/ugd/c0fca2_65fec98fd518422c9dd9314ac9725086.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/p_and_c_chart.pdfIn PDF document text
    • https://39ad70c8-6a03-4de2-a89b-b0209cba5754.filesusr.com/ugd/d2759c_7908177e2960416fb31731069f6565b8.pdf?index=trueIn PDF document text
    • https://d2faa26e-66ca-44cd-8f84-883624a71019.filesusr.com/ugd/dbbfd0_e36508ffaa9f43b79c9decf27b164029.pdf?index=trueIn PDF document text
    • http://vujuvisesakok.myartsonline.com/honda_gcv160_pressure_washer_not_building_pressure.pdfIn PDF document text
    • https://e437b920-fa79-41d5-b67c-0ca059f4e77a.filesusr.com/ugd/d97c10_d4592819508b48aaa8af49b365872e7a.pdf?index=trueIn PDF document text
    • https://9c12218e-e157-4070-b33f-4467b3cb42bb.filesusr.com/ugd/0c60a0_9fad35b04cc8488b9d1be09fda69a763.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wuniku/reporting_one_way_anova_results_apa_style.pdfIn PDF document text
    • https://6376acfe-5884-4251-b3d5-19a03c044549.filesusr.com/ugd/de3d83_d4ce859f2cda48f08810742ede69dbc9.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_off0000f297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF297 5896 bytes
SHA-256: bf2825bf282c58c7dd5faca00f0a06060cc66885898de9d0a56aab460cdb10ca
font_01_sfnt_off000106b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B3 11504 bytes
SHA-256: 2648c960df96a8bd958bfd659d84f2b60140359844b05df1e719f7bbe0778451

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