Malicious PDF — malware analysis report

Static analysis result for SHA-256 9902847167259d36…

MALICIOUS

PDF

71.1 KB Created: 2020-12-31 13:46:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: c42576d1bf65937c342e2d86febf3d8d SHA-1: edde34ab6642444043c9162f20ca280bceaf92b0 SHA-256: 9902847167259d3634e7f1033cfc7aa174247d4ec56e3cdb5ce0bd1eaf357ca8
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffe.ru/wb?keyword=wavelet%20headphone%20specific%20equalization%20apk%20pro PDF link annotation
    • https://zukudanasoxe.weebly.com/uploads/1/3/2/8/132815154/631622.pdfIn PDF document text
    • https://fozabenuguze.weebly.com/uploads/1/3/4/6/134685739/dezulobumorase_nixitotebonawu_lowudedi_giligunobuxuke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416493/normal_5fd6639ba0aec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413563/normal_5fe78c0f3c882.pdfIn PDF document text
    • https://juzugimigiroteg.weebly.com/uploads/1/3/2/3/132302883/8335017.pdfIn PDF document text
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/7844104.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/229d1aa2-c558-43ae-a23e-ea16444ab366/giwalaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c2395d2-6d81-4e2d-b32b-0b6484fed3f3/pennzoil_synchromesh_manual_transmission_fluid_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20dc0261-f8c3-4845-bb9d-04e1889baa16/47719025678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b8ed4c8-a04f-4b86-ab2f-51da3e694bf4/nenanetepigafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45ed730e-5a7f-4604-9ff9-30356cbd9550/asus_repeater_mode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df040466-d398-49ff-8484-118e098208fe/the_ex_games_epub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5e55625-57ca-439e-91f0-172abf084c41/exercices_sur_les_figures_de_style.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e20b6756-f2f4-435f-98c9-8f4012cd1f5b/microvision_canal_10_alberto_y_ubald.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e44c930-582e-466c-b3fa-4e39a8e5a674/sports_clips_coupons_groupon.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_off0000d66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66C 5556 bytes
SHA-256: c48afb6dbc9f3e5114eadc6b3f6b1f54b6f302367e9e061cff202496f9b6c5a8
font_01_sfnt_off0000e964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE964 11212 bytes
SHA-256: 4f60f83824a663663adc8f714902227cdad3c9fb1da602c1b4df2a8b9897106e

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