Malicious PDF — malware analysis report

Static analysis result for SHA-256 434786dbbabf33c9…

MALICIOUS

PDF

72.1 KB Created: 2021-02-13 20:59:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 56424d874edc1f06d1f29f4c0f3ad82f SHA-1: 2e0470872e3539e8b849bee9b0360ff17c5f9d02 SHA-256: 434786dbbabf33c9345f0f5ed9e8c4f481a161b0e63784576310ef0cdaa95f48
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://druttle.ru/wb?keyword=free%20magazine%20template%20for%20microsoft%20word%202010 PDF link annotation
    • https://cdn.sqhk.co/kurotevu/gdkMghf/that_s_life_frank_sinatra_lyrics_terjemahan.pdfIn PDF document text
    • http://nuverlites.online/free_vpn_apk_s4xlhy.pdfIn PDF document text
    • https://cdn.sqhk.co/jekunesoru/3iigcia/3d_car_maker_online.pdfIn PDF document text
    • https://jodegometokak.weebly.com/uploads/1/3/1/6/131606115/8420907.pdfIn PDF document text
    • https://jukatuve.weebly.com/uploads/1/3/2/7/132741058/e1295f9979e2.pdfIn PDF document text
    • https://tivepikilusu.weebly.com/uploads/1/3/4/7/134759048/kopapumuzinugisibufa.pdfIn PDF document text
    • https://cdn.sqhk.co/detateseb/sgiTlgh/rabbids_crazy_rush_gameplay.pdfIn PDF document text
    • https://lifezudo.weebly.com/uploads/1/3/0/7/130739479/gupexiwa.pdfIn PDF document text
    • https://vofirojaj.weebly.com/uploads/1/3/1/6/131637635/3345678.pdfIn PDF document text
    • https://kipidabivipili.weebly.com/uploads/1/3/4/3/134340994/zurolan.pdfIn PDF document text
    • https://cdn.sqhk.co/nitunoda/MSdgixU/amazon_sellers_account_cost.pdfIn PDF document text
    • http://edalovert.xyz/99499430195gydav.pdfIn PDF document text
    • https://vetolotex.weebly.com/uploads/1/3/1/3/131379132/0a4546416.pdfIn PDF document text
    • https://kimimidinom.weebly.com/uploads/1/3/1/4/131453749/2724466.pdfIn PDF document text
    • http://bilkan.fun/70193748900o5xk6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/b_w_formation_audio_streamer.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/49608657490.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/visheshan_visheshya_worksheet.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_off0000dab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB9 5896 bytes
SHA-256: a2c5d90796a045cf3ba6cd8ef5824ed17f0dc09dd1064b1843b0ea0321bf1b70
font_01_sfnt_off0000eed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED5 10768 bytes
SHA-256: cf167256c036e98e4cc442551d50523a809b350ca3379e320a32560e3c4708ed

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