PDF malware analysis — malicious · b0eba6d1b48718e5

MALICIOUS

PDF

63.7 KB Created: 2020-08-03 22:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b6e19c7e8f91983a6e43bda1db29b045 SHA-1: d3d7214b8963cfca9c7ffd06583658eacd7db6af SHA-256: b0eba6d1b48718e593d3c4aa6c5526b4402729e0096a7f24816f00d584f2bc41

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though partially corrupted, contains the same URL and text suggesting a lure for a 'solutions manual'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, likely to improve SEO and evade detection. The ML classifier strongly flagged this PDF as malicious.

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=statistics%20for%20business%20and%20economics%208th%20edition%20newbold%20solutions%20manual
- http://files.hideawayfarmar.com/uploads/1/3/0/7/130740573/pipevoponakigukukim.pdf
- http://files.westburybondreferendum.org/uploads/1/3/1/4/131454355/2977560.pdf
- http://files.wildlifeworldwidephotographycompetition.com/uploads/1/3/2/7/132740343/nemumovekiso-rifoxavugas-dijewo-xapizivej.pdf
- http://files.toplevelpi.com/uploads/1/3/2/6/132682822/1676941.pdf
- https://cdn.shopify.com/s/files/1/0432/5595/5624/files/xonitilarunegixowu.pdf
- https://cdn.shopify.com/s/files/1/0438/8379/0491/files/maxiwoluxalolubijiv.pdf
- https://cdn.shopify.com/s/files/1/0435/4077/5064/files/sirefi.pdf
- https://cdn.shopify.com/s/files/1/0433/7077/4693/files/67409516067.pdf
- https://cdn.shopify.com/s/files/1/0435/7590/2363/files/10034960432.pdf
- https://cdn.shopify.com/s/files/1/0436/0152/6948/files/25800504503.pdf
- https://cdn.shopify.com/s/files/1/0431/4293/8784/files/6619116297.pdf
- https://cdn.shopify.com/s/files/1/0428/6670/4550/files/hand_warmer_terraria.pdf
- https://cdn.shopify.com/s/files/1/0430/1642/1529/files/fiwosoti.pdf
- https://cdn.shopify.com/s/files/1/0437/7359/1703/files/95886215377.pdf
- https://cdn.shopify.com/s/files/1/0430/0197/0837/files/sadinibidarijutepeka.pdf
- https://cdn.shopify.com/s/files/1/0432/6785/0390/files/wofuv.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000aadc.bin` `bbcf2c3ce90220539c7b0ac1f740eb5f3f4638491c78be983f5e128439d39f0c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAADC	5792 bytes
`font_01_sfnt_off0000be73.bin` `92a7363f9f9e7fcb0d6a0849b556075d4a42a885ba3fcb97b805fddef17e4dd2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBE73	16300 bytes

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