Malicious PDF — malware analysis report

Static analysis result for SHA-256 f312f487ad19be85…

MALICIOUS

PDF

45.3 KB Created: 2020-10-02 19:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ff8ecaaa34827d3cfd0334ceb51f21e0 SHA-1: 329661a46d74a25c3f345d18860e0d1888751b46 SHA-256: f312f487ad19be85ca10461ece779e13b46eb1a7823204d9089b5b4d343b807b
140 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=lewis+medical+surgical+nursing+10th+edition+chapter+list In PDF document text
    • http://files.jmsolutionsltd.co.uk/uploads/1/3/0/8/130813750/risexurare.pdfIn PDF document text
    • http://files.fabcreteindustries.com/uploads/1/3/0/7/130776089/saxevunixagator.pdfIn PDF document text
    • http://dagotisa.visits-scotland.com/uploads/1/3/1/4/131453527/fupedexaz.pdfIn PDF document text
    • http://jiwemuviv.whollysimcha.com/uploads/1/3/1/6/131608016/pudemurudebenuvufeke.pdfIn PDF document text
    • http://mipave.outbackatpostoak.com/uploads/1/3/1/3/131380600/wivisowu-babop-rojela-kafoxukuvi.pdfIn PDF document text
    • https://site-1037235.mozfiles.com/files/1037235/bujimagixuteremabugi.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/2ee9061f-a6bd-420d-a605-1a86da34a930/58290125125.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd37085a-95e2-4e0b-81dc-ca7c1a214fe0/nosuwovufizujazofizever.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c85d512-e186-43d8-a77d-bcce6ee4a714/62497119175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6ebc2e9-9f3d-493e-ad49-eddd28c4c73c/tivapulev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0616e8b2-9192-4b14-af2c-8b25c40cd5bd/depavajirufeburuzugopitop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2707/8052/files/difiwovinifukawuxojal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9711/5809/files/guvofofutawam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6385/9605/files/rumipasovusewojusanal.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAC 5712 bytes
SHA-256: cf573cea01f95a37a69c364fdbd8efe6eedaa7ab79f79ea00c0b3916329edcd3
font_01_sfnt_off00008306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8306 10900 bytes
SHA-256: c7149cc5fffacb3147346c5b161867d666f5b363384beedb7fe1a6f835d0b658

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