Malicious PDF — malware analysis report

Static analysis result for SHA-256 677a9c5c82d9ebca…

MALICIOUS

PDF

72.9 KB Created: 2021-03-02 22:57:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4fec92abbf1da685b98c9ab7449c166b SHA-1: 4792105d6d5cb8a13dc22c4f16ae9e7363e31e5b SHA-256: 677a9c5c82d9ebcab5457448663f41ec0dc5c2dfe33f2db6960061d9be422cb6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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.
  • 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://midufefew.ru/wix?keyword=simulator+games+unblocked+weebly PDF link annotation
    • https://titawijuneve.weebly.com/uploads/1/3/4/0/134012454/zaxokeloribevom.pdfIn PDF document text
    • https://nujetamewude.weebly.com/uploads/1/3/4/8/134881912/1974718.pdfIn PDF document text
    • http://mkuu.club/web_browser_for_smartwatch_apk7tsu7.pdfIn PDF document text
    • http://pornbustyvids.com/88934986177q00l8.pdfIn PDF document text
    • http://gidujoluj.mypressonline.com/how_to_argue_against_moral_relativism.pdfIn PDF document text
    • https://wimatuzufuduwo.weebly.com/uploads/1/3/1/8/131871585/loguv-mazelo-tonolelebol-kejoj.pdfIn PDF document text
    • http://3bureaureport.info/gixuposexupizedewemoa4xa8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427821/normal_5fce48846cd90.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zitasixan.atwebpages.com/what_is_the_cost_of_starbucks_coffee_in_india.pdfIn PDF document text
    • http://gixiluvigatekij.atwebpages.com/55842361126.pdfIn PDF document text
    • http://vujapoguxesak.myartsonline.com/first_90_days_app.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/battlefield_4_weapons_locations_guide.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_off0000d5db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5DB 5760 bytes
SHA-256: 5494ce749933c0b1e1fa0f79b8b0d8ae929fe976b3e1e2de344447f8db23e77a
font_01_sfnt_off0000e975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE975 14832 bytes
SHA-256: a893018f95cf616f06dbae90a43e502506ec5b924df2d90fc6d431cb282455cb