Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff28189583811176…

MALICIOUS

PDF

69.5 KB Created: 2021-02-14 01:44:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 48e42f3230cb287b52ce5a3d5e99fc77 SHA-1: dde42e946dc2f82a8ed7a895a4b4b0f39ba3734d SHA-256: ff28189583811176caedd0395a3d96fa0dd38631741e432e56427b594a127a33
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://bologen.ru/wix?keyword=ludovisi+battle+sarcophagus PDF link annotation
    • https://mawetifatine.weebly.com/uploads/1/3/2/6/132683292/doferebapemalaget.pdfIn PDF document text
    • https://cdn.sqhk.co/waximanodif/giigqtb/86862395323.pdfIn PDF document text
    • https://teligodinawam.weebly.com/uploads/1/3/4/4/134457670/felixu_vilub.pdfIn PDF document text
    • https://cdn.sqhk.co/risenulowo/cvfXD4y/auto_craft_collision_repair_west_kellogg.pdfIn PDF document text
    • https://vedewoxid.weebly.com/uploads/1/3/0/7/130738666/zekopedajimujejonux.pdfIn PDF document text
    • https://cdn.sqhk.co/semegopo/jEKEggo/dokutosopowapofimufoni.pdfIn PDF document text
    • https://bewimesev.weebly.com/uploads/1/3/4/7/134753962/7408959.pdfIn PDF document text
    • https://lasaputuvawejep.weebly.com/uploads/1/3/5/3/135314153/lupew_nagujewe_panuvet_vajemikuzalixer.pdfIn PDF document text
    • https://cdn.sqhk.co/xomifinetepi/hdvid7Q/50647420320.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/1oV3Vci/screen_recorder_mac_free_download_full_version.pdfIn PDF document text
    • https://cdn.sqhk.co/gukitane/ZwoQzig/tumakesifufizeme.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380525/normal_5fd885552e845.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/p2jaicd/cat_warehouse_york_pa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2CA 5476 bytes
SHA-256: 48d14071af58b7fa762b0f69be8c840d21f23cd0739536952fd2e9bd80e4faca
font_01_sfnt_off0000e560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE560 10480 bytes
SHA-256: 973deacb2c8c7fb57441297a14bcad1c07a72e0a086e7218c073d4c1309ecf05