Malicious PDF — malware analysis report

Static analysis result for SHA-256 af999ac1b6927327…

MALICIOUS

PDF

41.1 KB Created: 2020-04-11 08:40:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: af08e3f8206d3835b6339bfabd3de0ff SHA-1: 5121713b085508e6cd53f1ccae190f9d6f63842b SHA-256: af999ac1b69273277cc0426fd8817c8352fc45fd2e70bc3050f88bfe476bd3cf
92 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO spam or to redirect users to malicious sites. The document body, though heavily obfuscated, contains text related to 'Sydney walking tours' and the authoring application, suggesting a lure to disguise the malicious intent. The PDF_SEO_LINK_FARM heuristic firing confirms the presence of a large number of external links, indicating a coordinated effort to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://bsa-sccc-pack301.com/uploads/1/3/1/3/131380456/131380456.html#sydney+walking+tours+self+guided
    • http://smartmartwireless.com/uploads/1/3/0/6/130621542/96d1ff2e4.pdf
    • http://stjosephmusic.org/uploads/1/3/0/2/130287735/lijivudobamotevot.pdf
    • http://mepalparish.org/uploads/1/3/1/4/131453810/livivudemologomibebo.pdf
    • http://bringgreeceforward.org/uploads/1/3/0/5/130545199/968dd8bca1c292e.pdf
    • http://asdf-fund.net/uploads/1/3/0/5/130541023/5256800.pdf
    • http://safemilhousing.net/uploads/1/3/1/1/131163610/vatasarawabadezaxar.pdf
    • http://hannahmableson.com/uploads/1/3/0/3/130323641/pimese_wuzep_dutodoxafi_vibabi.pdf
    • http://morstargar.com/uploads/1/3/0/6/130603741/xizogib-godiwaxudijewoj.pdf
    • http://pittsburghgutterandwindowcleaning.com/uploads/1/3/0/4/130488345/3136054.pdf
    • http://coachpeltonelitetraining.com/uploads/1/3/0/3/130313314/najawesuwejirasi.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_off00007912.bin
a59d74bd5a427b9137bd130b25d49dfc35ecb6dbdb0ce56ed45a6826d2af34f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7912 8120 bytes

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