Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fced95e9e8b870b…

MALICIOUS

PDF

36.0 KB Created: 2020-05-24 01:04:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08e8e815c556bc24d73f46c1414cb0c0 SHA-1: 95e233d6d8a788616fdac8fee2cc75647e69a636 SHA-256: 1fced95e9e8b870b9229110f638f8622cfd039020f188e41682375cbcbbf9362
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. The ML classifier also strongly indicated maliciousness. The embedded document body text, though partially corrupted, contains references to URLs that are also present in the list of extracted URLs, suggesting a coordinated effort to direct users to external content. The primary attack pattern appears to be SEO spam or a link farm designed to distribute malicious content or drive traffic.

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://sta-66-99-58-212.ladse.org/uploads/1/3/0/8/130873852/130873852.html#the+mousetrap+agatha+christie+characters
    • http://barleysbeans.com/uploads/1/3/0/7/130739811/jusuboxerusuxi.pdf
    • http://lambsontherapy.com/uploads/1/3/0/7/130775465/zupuresubami.pdf
    • http://proyectoalabanza.org/uploads/1/3/1/4/131453194/motasugex.pdf
    • http://karizmalingerie.net/uploads/1/3/0/5/130588205/direregarubijo.pdf
    • http://jacorinth.com/uploads/1/3/0/7/130739978/jekibiri.pdf
    • http://xn--ihrlandschaftsgrtner-pzb.de/uploads/1/3/1/4/131453374/7223889.pdf
    • http://saporirumeni.com/uploads/1/3/0/5/130588710/viruroje_konusenowon.pdf
    • http://ktencreations.com/uploads/1/3/0/5/130589338/2865910.pdf
    • http://traderight-bermuda.com/uploads/1/3/1/6/131606087/ribesalusar_wokulawavid.pdf
    • http://cpanel.q-four.com/uploads/1/3/0/5/130588773/zamuxawizerigaw.pdf
    • http://supertourist.net/uploads/1/3/0/6/130604752/8390618.pdf
    • http://mountaincreekcapital.com/uploads/1/3/1/3/131384071/f0e2bf2ba7d3b.pdf
    • http://yotainme.com/uploads/1/3/0/8/130874606/2032233.pdf
    • http://parislineone.com/uploads/1/3/0/2/130291433/c88840da3b3fb.pdf
    • http://brownbutternola.com/uploads/1/3/0/5/130589427/8712529.pdf
    • http://casserolegreenville.com/uploads/1/3/1/0/131069812/rorewib.pdf
    • http://swamptraps.com/uploads/1/3/1/4/131407068/tufopasid-vimorikuziji.pdf
    • http://ustraveldocuments.org/uploads/1/3/0/7/130774978/3785affcb33.pdf
    • http://trojanhorseboxingclub.com/uploads/1/3/0/6/130604935/bikafofimapez-dakirorif.pdf
    • http://curatingempathy.com/uploads/1/3/0/4/130483307/81a28f2d.pdf
    • http://americasmosthauntedneighborhood.com/uploads/1/3/1/4/131438835/dikotimurog-dijutexosol-zuwozorawaxod-wofixo.pdf
    • http://escape2you.com/uploads/1/3/0/2/130289476/afa75cf.pdf
    • 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_off00006499.bin
8ab5e7ef37cf144bacfbab49b4090ee60747b234f129a78695690b0aab805b70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6499 9296 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.