Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc969a74334435f4…

MALICIOUS

PDF

83.4 KB Created: 2021-03-04 17:40:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ee1ca249a2a71aaf8c741ba18b2c58e3 SHA-1: e142e0fdde9247bf35d16916e558142cb4cb273f SHA-256: dc969a74334435f41b7631f13978e2a6bc7d1c6a81864efc06382b59d37d983f
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://maypoin.ru/wb?keyword=pioneer%20vsx%20521%20remote%20control PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470035/normal_602e98ae6cec5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466161/normal_5fde5dce38aa8.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/98609104278.pdfIn PDF document text
    • https://xaxexuwolak.weebly.com/uploads/1/3/5/9/135978614/mivemeziguwep_nuvinomog_bezajititur_miragula.pdfIn PDF document text
    • https://pegepujime.weebly.com/uploads/1/3/1/4/131453637/rojadekupajarurene.pdfIn PDF document text
    • http://kojazunupetip.mygamesonline.org/fitalafu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501045/normal_60404c271c8e5.pdfIn PDF document text
    • https://borikalubir.weebly.com/uploads/1/3/2/6/132681749/5648323.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/0505998a-b8d1-4151-aff3-362e21eaeb72/bofaxupakoxoroj.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/windscribe_mac_free.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/breathe_movie_parents_guide.pdfIn PDF document text
    • http://sebokegekesuded.atwebpages.com/18866304432.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/97581731339.pdfIn PDF document text
    • https://s3.amazonaws.com/nolarifaforuxop/bookkeeping_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a38f48e-621f-4889-87a4-a4d475996453/kujulosij.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/theres_no_such_thing_as_a_dragon_jordan_peterson.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/aimersoft_itube_studio_full_1169.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/51051904334.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_off00010b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B18 5172 bytes
SHA-256: 744a3d4824443f52afbf1d5662d3b8d529cbe3110fad422a199348b918869c55
font_01_sfnt_off00011cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB5 10620 bytes
SHA-256: b52fabd58465e769499933ca6ed14404d7f1c24570cd5a8c0b515e4b885f66b5