Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce05cf05f0a194db…

MALICIOUS

PDF

49.1 KB Created: 2020-04-30 18:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d397a6f4213aa6f996cde935c351633c SHA-1: ce206b883009e00127da225cd086f0a6a8ea7a43 SHA-256: ce05cf05f0a194db9ab180c660b086c09fcb99786248a19d21c6805d23df8f1b
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains a large number of external links, many of which point to other PDF files hosted on similar domains. The document body text is minimal and appears to be a lure, referencing a movie script to attract users. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm designed to manipulate search engine results or direct users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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 http://miningintelligencecapital.com/uploads/1/3/1/3/131381374/131381374.html#a+most+violent+year+movie+script+pdf
    • http://amanaexpress.net/uploads/1/3/0/4/130488888/muvefa.pdf
    • http://iohtea.com/uploads/1/3/0/6/130604613/c7d7e5.pdf
    • http://ytgparty.com/uploads/1/3/1/4/131453561/7097678.pdf
    • http://yaayaaclothing.com/uploads/1/3/1/4/131453735/4719188.pdf
    • http://kukconsult.net/uploads/1/3/0/8/130874592/c092203.pdf
    • http://registrodemaquinas.net/uploads/1/3/0/6/130621706/rotawupero.pdf
    • http://photografica.org/uploads/1/3/0/4/130477541/7388927.pdf
    • http://dandelionacupuncture.com/uploads/1/3/0/4/130488114/talobin_xijogilalivalu_pusazux.pdf
    • http://homeinfoinyorkregion.com/uploads/1/3/0/9/130969375/482347256223.pdf
    • http://mail.garethmatthewscouture.com/uploads/1/3/1/4/131437603/d4a9ee5c.pdf
    • http://captzacksseafood.com/uploads/1/3/0/3/130324419/tevemekifakago-kipekisovumuva.pdf
    • http://canadavisaoffice.net/uploads/1/3/0/6/130620280/5248969.pdf
    • http://amanaexpress.net/uploads/1/3/0
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000098bf.bin
0e5ab513cbd7575a8b51dafeb153b312d0e2306b392ab4a688fe9c8b2303103b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98BF 8408 bytes

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