Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6daf158c9cacc17…

MALICIOUS

PDF

36.0 KB Created: 2020-04-11 03:07:31 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ff598595fdd3742f5cd9a733acd56961 SHA-1: 75d05df5d36aad0d91bf27449cc129be96140130 SHA-256: b6daf158c9cacc1715341c3887aca9ce6b9fbab610702e78089005fae519f403
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, indicating a link farm or SEO spamming attempt. The document body is heavily obfuscated but contains references to URLs that are also present in the heuristic findings. No scripts were extracted from this sample, limiting the ability to determine further malicious intent beyond link distribution.

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://webdisk.ladse.org/uploads/1/3/0/4/130475994/130475994.html#energizer+aa+battery+data+sheet
    • http://healthyvillagesinc.org/uploads/1/3/1/1/131163752/rebebofamafez-ralasidabokaze-zujaguvefux.pdf
    • http://divorceagency.net/uploads/1/3/0/4/130435732/forepixokajos-dokew-zagepixi-botuwuleku.pdf
    • http://wolfeplaster.com/uploads/1/3/0/6/130621917/46df5e89.pdf
    • http://unikwities.com/uploads/1/3/0/5/130588506/dinurezarad.pdf
    • http://cashindeeds.com/uploads/1/3/0/6/130604505/jitomavutobosotolanu.pdf
    • http://steamkeystudios.com/uploads/1/3/0/4/130479210/6682488.pdf
    • http://night-squirrel.com/uploads/1/3/0/7/130740000/fegebofamiwo-lumoribiv-donuf-xadezo.pdf
    • http://bfbc-moshi.org/uploads/1/3/0/7/130738765/4022583.pdf
    • http://anttikorhonen.fi/uploads/1/3/1/4/131437233/pitetafi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fa8.bin
46ced07e826901f622e5c972b4692645a5452adc5e47d60773411b184f245368		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA8 8672 bytes
font_01_sfnt_off00006f48.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F48 16036 bytes

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