Malicious PDF — malware analysis report

Static analysis result for SHA-256 b10a44de1918b15f…

MALICIOUS

PDF

36.4 KB Created: 2020-03-08 01:17:07 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a14f82c485fd4463e2922542e7d208f7 SHA-1: 9a795338f883338ee5bceb93f5ca51101a0f92d7 SHA-256: b10a44de1918b15ff62ae8af79e6bb39fd59c8038c7bf673680619b813505e83
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a common technique for SEO poisoning or redirecting users to malicious sites. The document body, though partially corrupted, suggests a lure related to a 'job transfer letter for apartment'. The presence of numerous PDF links hosted on various domains points towards a link farm or a phishing campaign designed to distribute malware or harvest credentials. No scripts were extracted from this sample.

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://cpanel.sarahelizart.com/uploads/1/3/0/6/130639357/130639357.html#job+transfer+letter+for+apartment
    • http://camdenlawncare.com/uploads/1/3/0/7/130775491/3088968.pdf
    • http://www.thementalarchitect.com/uploads/1/3/0/2/130273790/4c6f5388ec36.pdf
    • http://simonbergpedersen.com/uploads/1/3/0/4/130488067/1950704.pdf
    • http://www.drakeporter.com/uploads/1/3/0/8/130874304/votatafe.pdf
    • http://aggressivelyintelligent.band/uploads/1/3/0/5/130551187/ganavozikimasi.pdf
    • http://acmegeneralconstruction.org/uploads/1/3/0/6/130604988/razef-niminamidu-fajivazudozo.pdf
    • http://fresh-air-yoga.com/uploads/1/3/0/6/130620776/f0a590c7.pdf
    • http://joeblitzstein.net/uploads/1/3/0/6/130604547/4228447.pdf
    • http://www.robertotramarin.com/uploads/1/3/0/5/130590126/pesulofip-sufuzoxesovaju-riketazameveze.pdf
    • http://amazonpropertymanagement.us/uploads/1/3/0/5/130539338/jilabakunex_zonomaxirafanas_dipibojiloru_fimutebadovisin.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_off000064bb.bin
de04d2eadca6ff22f33ba85fe0600af053b5df9572f8d13108727c331510aa62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64BB 8324 bytes

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