Malicious PDF — malware analysis report

Static analysis result for SHA-256 43424d9af0a7b9e6…

MALICIOUS

PDF

69.2 KB Created: 2021-02-24 14:45:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: da05a1179287549d826df19e1cd51aee SHA-1: e90e70fca8486bdc9366b4271247c3257d3005ff SHA-256: 43424d9af0a7b9e6ef47d3645b1bab533be9bc650aa0927843eeeccc64ea06db
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://bologen.ru/aws?utm_term=at+the+cross+hillsong+guitar+chords PDF link annotation
    • https://cdn.sqhk.co/nopavoboriru/djjjdjc/44309784612.pdfIn PDF document text
    • https://jiwepeduvebata.weebly.com/uploads/1/3/1/4/131456267/dupimewu.pdfIn PDF document text
    • http://fiwimupatemo.22web.org/50_verbos_irregulares_en_pasado_simple_en_ingles_y_espaol.pdfIn PDF document text
    • http://teasmall.space/diy_outdoor_wood_projects_free_plansf3tct.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366973/normal_5feb6e6d834e9.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinirumawe/6hcVjgg/badosexom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446280/normal_5fd993d938c69.pdfIn PDF document text
    • https://cdn.sqhk.co/delojiwuguj/8FZaL5d/khloe_and_tristan_and_jordyn.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/iijqfGb/master_word_meaning_bangla_entertainment.pdfIn PDF document text
    • https://gotukedefiwukub.weebly.com/uploads/1/3/5/3/135309477/deridipeguf.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/1thbIid/warzone_download_size_pc.pdfIn PDF document text
    • https://nabebumiz.weebly.com/uploads/1/3/1/4/131452902/38be1d9b.pdfIn PDF document text
    • https://cdn.sqhk.co/furikute/jjjahaV/slick_slime_sam_barbie_doll_videos.pdfIn PDF document text
    • https://cdn.sqhk.co/loxepafigav/hibxjej/tips_and_tricks_for_sat_math_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ribizotujigotok.rf.gd/technologies_of_the_gendered_body.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_off0000d02b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02B 5192 bytes
SHA-256: cd624e8fe9bd700b0509e9366efbe8bdf687c5f81514a26f5a976abdfa29fefd
font_01_sfnt_off0000e1cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CC 10652 bytes
SHA-256: 1b381adba0f7d3eb1e9e1e5a4bd8329e4fdde2b13f98f7c665388ea6adb6a2ab