Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9bb271dae8e8319…

MALICIOUS

PDF

135.4 KB Created: 2020-06-08 16:17:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d5f1f015679a2b3910ee89ae2a54cb7 SHA-1: c9fd52be9a01e3c6b26581a4f2284b016811adc5 SHA-256: d9bb271dae8e8319c6872285bf2e2e4610fca8b4d33f92a860b6f2f00c50b013
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file exhibits characteristics of an SEO link farm, containing numerous external links to PDF documents hosted on various domains. The primary lure appears to be related to 'Algoritmos teoria e prática cormen download'. The heuristic firings indicate a mass of external PDF links, suggesting a distribution mechanism for malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

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://host54.carmichaelnl.com/uploads/1/3/0/5/130588343/130588343.html#algoritmos+teoria+e+pr%25C3%25A1tica+cormen+download
    • http://samloney.com/uploads/1/3/1/3/131381769/7796394.pdf
    • http://newsprintedition.com/uploads/1/3/0/5/130550652/9127194.pdf
    • http://sifonierrata.com/uploads/1/3/1/3/131384201/porax.pdf
    • http://lakewaypaddlesports.com/uploads/1/3/1/8/131871627/buzasox.pdf
    • http://dentureexcellencespearwood.com/uploads/1/3/1/1/131164066/furadugajovetedoxo.pdf
    • http://thekitchenshepherd.net/uploads/1/3/0/4/130488847/cf95c95923.pdf
    • http://brightlightgroups.com/uploads/1/3/0/5/130541186/serumagux.pdf
    • https://fagifidame.files.wordpress.com/2020/06/nawopamol.pdf
    • https://wiwifidu.files.wordpress.com/2020/06/tiriwitumaxej.pdf
    • https://wuzavigen.files.wordpress.com/2020/06/zidigafafux.pdf
    • https://juzakiwari.files.wordpress.com/2020/06/dumafumanon.pdf
    • https://zitipon.files.wordpress.com/2020/06/47969970942.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001bf34.bin
8e946ab76871b4001a8eb2020b863cc680b9804028e4ddcab6f6e8a2704c6764		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF34 2912 bytes
font_01_sfnt_off0001c993.bin
7f7985e3aade96fb7dd562a92720e74b11b73cea0a9137897e287265824f4710		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C993 16512 bytes
font_02_sfnt_off0001f995.bin
2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F995 16060 bytes

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