Malicious PDF — malware analysis report

Static analysis result for SHA-256 797f5902d47ae3e9…

MALICIOUS

PDF

52.8 KB Created: 2020-05-30 08:45:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a65b76ce6d42ff74ea3575fda9233db7 SHA-1: e1d71331ec5081095520574d4c03972b4b3fd37c SHA-256: 797f5902d47ae3e9b765938a77381c0fda20d1b91f529380ccbe84060db94ad2
96 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which appear to be part of a link farm designed to distribute malicious content. The document body, though heavily obfuscated, contains references to 'Minecraft' and URLs that suggest a lure to download or access further malicious files. The ML classifier strongly indicated maliciousness, supporting the presence of a link farm and embedded URLs as indicators of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9836

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://pujingttyulecheng.br3h.com/uploads/1/3/0/6/130620797/130620797.html#minecraft+1.+8.+1+full+indir
    • http://jimcasy.com/uploads/1/3/0/7/130739220/9706798.pdf
    • http://albuquerquemobilenotary.com/uploads/1/3/0/2/130273766/2033469.pdf
    • http://payment.wtfurniture.com/uploads/1/3/1/3/131384643/9633437.pdf
    • http://symonsvalleyranch.com/uploads/1/3/0/2/130270823/valozu.pdf
    • http://jvoltdesignes.com/uploads/1/3/0/6/130605373/sibuja.pdf
    • http://urbanrustmicrogreens.com/uploads/1/3/0/5/130589020/mokuraxes.pdf
    • http://www.opentle.org
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://www.gnu.org/licenses/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00007413.bin
d3b3eed93a66fd79f12078051939b962f90c0afafe9a9f177aaf000d14d4a03c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7413 16364 bytes
font_01_sfnt_off0000a057.bin
3527e25ee0081c775d6a3fd6ff0e8754f153958ef9ffa9c4c6500d59bc45885f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA057 11500 bytes

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