Malicious PDF — malware analysis report

Static analysis result for SHA-256 feee7b9dadb0d495…

MALICIOUS

PDF

50.5 KB Created: 2020-10-04 23:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 1176c4299d1ba6ccee5483020a99281b SHA-1: 632cfcb523173fc27352a416f39afc6a5aad9f2e SHA-256: feee7b9dadb0d4958a5eaa7a313ed6f966ab75b42b3949aff7695d8479d4175a
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://gettraff.ru/strik?keyword=basic+and+clinical+pharmacology+review In PDF document text
    • http://files.thunderfishmedia.com/uploads/1/3/0/7/130775462/9281141.pdfIn PDF document text
    • http://gowol.neurologysymposium.com/uploads/1/3/1/6/131607305/mepilo-tuzeluninisab-luzibebiwiboj-buzarajapasapuw.pdfIn PDF document text
    • http://domel.sardarchitects.com/uploads/1/3/1/4/131454065/zonijadiposi.pdfIn PDF document text
    • http://kozawanat.whitecloudvet.com/uploads/1/3/2/3/132302921/paxebab.pdfIn PDF document text
    • http://nijixa.edinburghcorporate7s.com/uploads/1/3/1/4/131407014/xijosivebitelo.pdfIn PDF document text
    • https://site-1039631.mozfiles.com/files/1039631/baxiletirodi.pdfIn PDF document text
    • https://site-1036636.mozfiles.com/files/1036636/95620701182.pdfIn PDF document text
    • https://site-1037214.mozfiles.com/files/1037214/ranato.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/99e29191-844a-4937-a932-35490acae7c9/96626389254.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dca1eaf-e4d2-4c57-afeb-1fb0d318080b/pazodepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a90f85f-8636-4fb7-baad-061a8e5e9c7e/62299222967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d639481-2581-4d93-b43b-af65c4aded46/budaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16f35708-8c20-4331-aaee-93fe28fd625c/60575526106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e9c12b1-4ca0-4b07-b7d7-24f472b1988f/42742325356.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c08688a-bd20-43a4-ab17-82485ff918fb/bakabalivelebixuvavo.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00009d92.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9D92 19156 bytes
SHA-256: bbf67835730670c9fb0147fc38829e3d81d6de7208820009ae91dda311da7e12
font_00_sfnt_off0000680d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x680D 5788 bytes
SHA-256: a84c0d97b880d0c6029383d0666bb35c1caeae6314feb61a790f606df95a658c
font_01_sfnt_off00007bad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAD 9880 bytes
SHA-256: 13b4bde8e5155be06ee66499c2184d9d7f275a4097feb814b9386c16010591b7

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