Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e85817e28774374…

MALICIOUS

PDF

68.9 KB Created: 2021-02-28 18:07:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e42776713e8c691beb5cdd2c3a2bfab5 SHA-1: 866b482551a3ba474991ed1e60aed5bb89a6ca20 SHA-256: 0e85817e28774374c2c44b40d576089222e8ccee998868ffc1b505202f421178
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://dugedepap.ru/award?keyword=en+nombre+de+jesus+acordes+ukulele PDF link annotation
    • http://devicesprotectionforusers.site/how_do_you_know_when_your_waffle_maker_is_readyf7ka7.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/pegebijapuvetarusofkdwfu.pdfIn PDF document text
    • https://nefupoxuwuridek.weebly.com/uploads/1/3/4/7/134747690/5728897.pdfIn PDF document text
    • https://jojapunopumaj.weebly.com/uploads/1/3/1/4/131482926/3046816.pdfIn PDF document text
    • https://kesoxebexug.weebly.com/uploads/1/3/2/6/132681937/baxegumezosudo-juwexugasofuwo-pewuf.pdfIn PDF document text
    • https://zezevibowavaki.weebly.com/uploads/1/3/4/8/134854125/2253043.pdfIn PDF document text
    • https://lerasakob.weebly.com/uploads/1/3/2/6/132682990/zokoliwo.pdfIn PDF document text
    • https://dovizitozul.weebly.com/uploads/1/3/1/4/131408131/ponenufekepumo.pdfIn PDF document text
    • http://3gusevshop.website/web_tycoons_pvt_ltds5w2w.pdfIn PDF document text
    • http://skywonder.space/sociological_imagination_definenertw.pdfIn PDF document text
    • http://moresukko.ru/hand_lettering_practice_sheets_freez6q49.pdfIn PDF document text
    • https://xuvuluvibes.weebly.com/uploads/1/3/4/4/134494650/8ba72919bfb983.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lenadupubop.rf.gd/madama.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/87173435485.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/56572675380.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_off0000ce5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE5A 5324 bytes
SHA-256: f8628a0a7037b9ffab49b7aa5d99d105d7ecd324944608edc44d9e811bfbc3f9
font_01_sfnt_off0000e05d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05D 11280 bytes
SHA-256: 7b8230865b65278682a390600b7dad3f6f9f7b5926b2811d3f6a408359875931