Malicious PDF — malware analysis report

Static analysis result for SHA-256 05a0d8df246aadb5…

MALICIOUS

PDF

39.6 KB Created: 2020-04-11 07:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 660150a51cd2c88d30344d5213184ad6 SHA-1: 28f40e1cb9ae7f0bf5cb892a541642d8f4ed9a21 SHA-256: 05a0d8df246aadb5324cd8ec51076c892d0fb0b09ec84c341ceb62c798394f70
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the presence of numerous external URLs indicates a likely attempt to redirect the user to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://fhsproductions.com/uploads/1/3/1/1/131163599/131163599.html#eric+whitacre+sleep
    • http://floodproofla.org/uploads/1/3/0/5/130588718/3193122.pdf
    • http://rde-nso-2019.org/uploads/1/3/1/4/131437210/pajijer_xozaxedido_ritefelatet_kajusajorug.pdf
    • http://jacobmoehrmanportfolio.com/uploads/1/3/0/6/130604022/1849105.pdf
    • http://pursuingjesuschrist.org/uploads/1/3/0/7/130775904/342513.pdf
    • http://chrismendez.net/uploads/1/3/0/5/130539432/2a95b6b61.pdf
    • http://bigjimsbonding.com/uploads/1/3/1/4/131437576/ruzefejitof_vikilozix_vagujelow_vepesotu.pdf
    • http://cathystronach.com/uploads/1/3/1/3/131398431/mikonekogifesog-xawipepiso.pdf
    • http://rosebudvictoria.com/uploads/1/3/0/6/130639775/7634964.pdf
    • http://vamatabeauty.com/uploads/1/3/0/5/130540472/96319f602456bfe.pdf
    • http://bgmnephrology.com/uploads/1/3/1/6/131636764/df3f52b58.pdf
    • http://northcricklodge.com/uploads/1/3/0/2/130270813/fotanimikitigokatos.pdf
    • http://boaz-photography.com/uploads/1/3/0/8/130814471/e2d69a5c6565.pdf
    • http://masonmasonmedicalltd.com/uploads/1/3/0/2/130289163/f57b955244.pdf
    • http://cowinfo.org/uploads/1/3/0/7/130775978/6d75feebe373.pdf
    • http://southmanxtremetriathlon.com/uploads/1/3/1/3/131379174/3654432.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_off00007320.bin
a8107be18ee19a81b278dae03a1cfdbc9d558b7cd3f463803bba8f1997848135		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7320 8052 bytes

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