Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c76ae8d6da8d222…

MALICIOUS

PDF

71.1 KB Created: 2021-02-15 20:19:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c42fe7527863e6206f12c2a3f4f3e28c SHA-1: 81d66d6ba41e730ab6622d813e7b906b082c0e44 SHA-256: 5c76ae8d6da8d2229b4be7a3f7a598b1992b893a74ed41481afe91ee4f3dc91a
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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://baarspo.ru/wb?keyword=an%20astrologer PDF link annotation
    • https://cdn.sqhk.co/jufebarur/hdhirqS/lep_s_world_18-_4.pdfIn PDF document text
    • https://cdn.sqhk.co/beluvano/gihi6gh/my_little_princess_stores_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/jigotove/iagdiap/dining_table_sets_for_6.pdfIn PDF document text
    • https://cdn.sqhk.co/tevunufoba/hggdjjQ/free_online_games_bubble_witch_saga_2.pdfIn PDF document text
    • https://panebafizi.weebly.com/uploads/1/3/4/3/134365464/7575882.pdfIn PDF document text
    • https://cdn.sqhk.co/wuladupuzo/CqUhfhb/ziludiv.pdfIn PDF document text
    • https://pufabakorulur.weebly.com/uploads/1/3/4/3/134320636/bujigazemimu.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/mhbeMgh/20850902277.pdfIn PDF document text
    • https://toraboretopupu.weebly.com/uploads/1/3/4/7/134769369/sipeserukuz-nademorigire-gatuja-nowozik.pdfIn PDF document text
    • https://cdn.sqhk.co/sadopore/Xlji2NF/jazowej.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/8hYUTDe/xezaf.pdfIn PDF document text
    • https://giruwaferelesed.weebly.com/uploads/1/3/4/8/134850821/kezagofibesokedasal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383680/normal_601720d629234.pdfIn PDF document text
    • https://cdn.sqhk.co/vimerokil/ujegdl5/lovibebatibilexakewakux.pdfIn PDF document text
    • https://baarspo.ru/wb?keyword=an%20astrologer's%20day%20question%20answer%20pdfPDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/tuderez.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_off0000d8ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BA 5552 bytes
SHA-256: 136d1fc5501303ad9c82bf6014b23a76781e33f64107e0f8c4f890dd8eeb99aa
font_01_sfnt_off0000ebca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCA 10516 bytes
SHA-256: b63ac3d8a60e53ceee91b9f2f29ace46beafee75e720e311efaf2f48213a4f98