Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f290468487b3c8…

MALICIOUS

PDF

28.7 KB Created: 2020-04-16 12:49:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d772690892e0e8c171cebe08e8085ab3 SHA-1: 41553ac646fcd9a97daeed00213777f889399e5f SHA-256: d0f290468487b3c8caed688f01860ae7fb00bb674689bc8bef6f0b572af7698c
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links to other PDF files hosted on various domains, indicative of a link farm or SEO spam campaign. The ML classifier strongly flagged this PDF as malicious. The document body contains garbled text and some of the extracted URLs, suggesting the primary purpose is to redirect users to potentially malicious content hosted on these external sites.

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://jasmine-reyes.com/uploads/1/3/0/6/130639690/130639690.html#juniper+mx204+configuration+guide
    • http://moms-space.net/uploads/1/3/0/7/130740550/wijebu.pdf
    • http://waynesborodwilawyer.com/uploads/1/3/0/9/130969747/8fbf758ca6.pdf
    • http://bestratedlondon.com/uploads/1/3/1/3/131398019/gowimurevor-zozevedowavon-lepobunu-lijiz.pdf
    • http://valchristoff.com/uploads/1/3/0/5/130550715/xitolagakovenidipo.pdf
    • http://wptwwc.com/uploads/1/3/0/5/130546076/5020880.pdf
    • http://simmonsexteriorwash.com/uploads/1/3/0/6/130604639/kujasobupuw.pdf
    • http://myluxurycleaner.com/uploads/1/3/0/7/130776131/5701449.pdf
    • http://infinityprime.org/uploads/1/3/1/3/131398459/6988731.pdf
    • http://lawrencepreston3d.com/uploads/1/3/0/3/130379158/somotagarekufiwixidu.pdf
    • http://miatv.us/uploads/1/3/0/3/130323612/jovavawufilamujekari.pdf
    • http://rent-a-ringer.com/uploads/1/3/1/6/131607919/kukiruwizawuv.pdf
    • http://elitepaintingcleaningandmore.com/uploads/1/3/0/3/130323573/6185576.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_off00004c01.bin
f647f1b32863929e3a49705ab02bcc2064aa68d34d78fe0d80151e6a6f4fcf45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C01 6776 bytes

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