Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e0d54a9de94f50…

MALICIOUS

PDF

34.6 KB Created: 2020-06-07 10:55:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-07-24
MD5: 7e8370bddcfacddd33dfea91c837d112 SHA-1: 56e216e4b2cd50dbddd881a059e2521495e79b01 SHA-256: f5e0d54a9de94f506df629dc011d7059fd450d70ae5b364d59bebe53e3d5fa7a
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a "Cisa 2014 manual" lure and embeds a large number of links to external PDF files. One of these links, https://ttraff.com/wp3?keyword=cisa+2014+manual#cisa+2014+manual, points to known malicious redirector infrastructure. The document's structure and embedded links strongly suggest a phishing or redirection campaign aimed at leading users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.com/wp3?keyword=cisa+2014+manual#cisa+2014+manual In PDF document text
    • http://mta-sts.mx.hautetotssale.com/uploads/1/3/1/3/131384412/bozuwido-rofatu.pdfIn PDF document text
    • http://baddogspeakers.com/uploads/1/3/1/6/131637027/689336.pdfIn PDF document text
    • http://allielynch.com/uploads/1/3/0/7/130776518/3a7549ae0.pdfIn PDF document text
    • http://208handyman.net/uploads/1/3/1/8/131872273/74971.pdfIn PDF document text
    • http://diezhotel.info/uploads/1/3/0/5/130542940/susew-wafikagufukef-kokuz-kowopikepinozol.pdfIn PDF document text
    • http://bling-d.com/uploads/1/3/1/4/131411600/77dd6a3.pdfIn PDF document text
    • http://designpresence.net/uploads/1/3/0/6/130639824/bakopiku_pinemar_gaxufopezanovez.pdfIn PDF document text
    • http://admin.badmintonwycombe.co.uk/uploads/1/3/0/8/130814343/6178316.pdfIn PDF document text
    • http://princessjewelbymirna.com/uploads/1/3/1/4/131437236/5466727.pdfIn PDF document text
    • http://mrsbutlers4thgradeclass.com/uploads/1/3/0/2/130291471/d3db0ea9f.pdfIn PDF document text
    • http://brusuelastravels.net/uploads/1/3/0/5/130588672/radolomareze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://vitasaven.files.wordpress.com/2020/06/merawekovofitekuwano.pdfIn PDF document text
    • https://fulagumiweje60933585.files.wordpress.com/2020/06/17589959046.pdfIn PDF document text
    • https://kemalorudor.files.wordpress.com/2020/06/21158355776.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD7 10456 bytes
SHA-256: 30e66e5a3a286b409dcf97a2a3d0e9044fb361db9773767c9a27b5983a3a9f59