Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95ef462888d7cee…

MALICIOUS

PDF

63.3 KB Created: 2020-10-09 07:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d6fa79fda66ef3492a8107aee3e8efb9 SHA-1: 660025442641936b4acb15eaa8ccf5d82793c578 SHA-256: b95ef462888d7ceefe99be7db58cc2a9166f33036a72f0c5be40c2849572e928
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.cc/pify?keyword=millennium+falcon+hallway In PDF document text
    • https://site-1039514.mozfiles.com/files/1039514/27629675779.pdfIn PDF document text
    • https://site-1036730.mozfiles.com/files/1036730/4398591952.pdfIn PDF document text
    • https://site-1036935.mozfiles.com/files/1036935/gebobemizetudenopu.pdfIn PDF document text
    • https://site-1036661.mozfiles.com/files/1036661/37917787872.pdfIn PDF document text
    • https://site-1036834.mozfiles.com/files/1036834/2978287058.pdfIn PDF document text
    • http://files.speakupsaveamerica.com/uploads/1/3/1/1/131163599/1485745.pdfIn PDF document text
    • http://files.southseasicecream.com/uploads/1/3/1/8/131857243/193e4d5a497d83c.pdfIn PDF document text
    • http://files.dswinvestment.com/uploads/1/3/2/6/132695586/fuxifadiv_webixumamemu_gogoketisaveled.pdfIn PDF document text
    • http://mokafob.gbforussenate.net/uploads/1/3/1/8/131856372/9448292.pdfIn PDF document text
    • http://golojik.llechrwd.co.uk/uploads/1/3/0/7/130776485/lufukamurivejenewo.pdfIn PDF document text
    • http://files.kevinlangendoen.com/uploads/1/3/0/9/130969950/vilefelupigoxutaf.pdfIn PDF document text
    • http://files.arthurkeeganbole.com/uploads/1/3/1/4/131452815/rukekuvazexidise.pdfIn PDF document text
    • http://files.kauwai.com/uploads/1/3/1/6/131636629/jomafek_todasupi.pdfIn PDF document text
    • http://nivuvavi.dbworldphoto.com/uploads/1/3/0/9/130969656/4837748.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2831/6313/files/macgyver_lost_treasure_of_atlantis_123movies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1532/files/suzuki_piano_book_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/1052/5853/files/female_pomeranian_puppies_for_sale_in_michigan.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_off0000bb64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB64 5048 bytes
SHA-256: fd0ee6eca621cfa23b0841300a3cf3e5dcc77e78309b0617e245dd1277349beb
font_01_sfnt_off0000cc95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC95 10360 bytes
SHA-256: 6829836d1c8878f05c8faa239f55c6177f536906b1038e4a2681d4cb8ecebab3

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