Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a14835d9ed8fffe…

MALICIOUS

PDF

41.6 KB Created: 2020-07-19 22:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0032faa04f0cb23d38653ed362284fd9 SHA-1: d53ab35ad299eb3929291439e10940f1cc068091 SHA-256: 3a14835d9ed8fffe90c9fa59e649c18192c43924d6a62c5005cc9b9ea07df997
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'whirlpool side by side refrigerator owners manual'. The primary malicious URL identified is ttraff.com, which likely serves as a redirector to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.com/wb?keyword=whirlpool%20side%20by%20side%20refrigerator%20owners%20manual
    • http://files.frisette.ca/uploads/1/3/1/3/131379421/bikabefegoses-jaravowizadije.pdf
    • http://files.catholiccharitiesvc.com/uploads/1/3/1/1/131164398/9218391.pdf
    • http://files.matthewpeckhamtenor.com/uploads/1/3/1/4/131483371/muver_jilimunerumuvil_gelowebipudaz_doroviz.pdf
    • http://files.qthpublishing.com/uploads/1/3/1/6/131607321/saraxa-kulatuwo-womezu-nigixemolurixo.pdf
    • http://files.equi-libria.com/uploads/1/3/0/7/130739510/4040813.pdf
    • http://files.whynautical.com/uploads/1/3/1/3/131383942/josuwikubotafod.pdf
    • http://files.careercoachradio.com/uploads/1/3/0/9/130969334/1069313.pdf
    • http://files.janetrades.com.jm/uploads/1/3/1/8/131871535/93b11e3d.pdf
    • http://files.careercoachr
    • https://zofutovit.files.wordpress.com/2020/07/36304637830.pdf
    • https://lirajobavan.files.wordpress.com/2020/06/56393156722.pdf
    • https://memibenamefu.files.wordpress.com/2020/07/tutukukaguvev.pdf
    • https://cdn.shopify.com/s/files/1/0432/1653/5720/files/71148671985.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/fopugajimivaluvuwebesox.pdf
    • https://cdn.shopify.com/s/files/1/0431/2029/6090/files/gazotifo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/buxiwebutepejopugafido.pdf
    • https://cdn.shopify.com/s/files/1/0432/5012/2916/files/nabaveteletalabidetadugud.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/5000545342.pdf
    • https://cdn.shopify.com/s/files/1/0432/9229/5332/files/46165174396.pdf
    • https://cdn.shopify.com/s/files/1/0428/7001/4111/files/nofofegujikisexaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/73493822873.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_off00005dff.bin
e1465fbd5ab1473d90b732a573d0f66fefe8fa821ced18aeae8d172c8543cafa
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFF 5684 bytes
font_01_sfnt_off00007135.bin
0e897d00f2ad052b58927dae06cb9138dcb29f01e2197b31dcfe9327790dfe5b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7135 12064 bytes