PDF malware analysis — malicious · 7eaba1bc0343efdc

MALICIOUS

PDF

49.4 KB Created: 2020-07-22 04:37:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b2152cdffa16b698fdcc14d6943a5523 SHA-1: 539706214b5451577b722494ee48ff26d46fb00b SHA-256: 7eaba1bc0343efdca1081fcdaa0357e214f70599995a291ac5c835a4a5587608

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, which is also present in the document body. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. The primary malicious URL identified is ttraff.ru, which is used in a lure related to IELTS speaking samples.

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.ru/pify?keyword=ielts+speaking+samples+book+pdf
- http://files.qmathclass.com/uploads/1/3/0/7/130740502/rutug.pdf
- http://files.crossfitvultus.com/uploads/1/3/1/3/131384663/matibukumaxix-kabevusuderug.pdf
- http://files.flyfishingcoyhaique.com/uploads/1/3/1/4/131454304/7539451.pdf
- https://cdn.shopify.com/s/files/1/0432/2898/7547/files/fonowagokukox.pdf
- https://cdn.shopify.com/s/files/1/0431/4379/0760/files/89472853268.pdf
- https://cdn.shopify.com/s/files/1/0436/5592/1822/files/43277269081.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.pdf
- https://mixusobaso.files.wordpress.com/2020/07/zofadijosudofenafinugag.pdf
- https://xituvodewam.files.wordpress.com/2020/06/vetadetowidiwafolibujedu.pdf
- https://tazudumo.files.wordpress.com/2020/06/50502773604.pdf
- https://cdn.shopify.com/s/files/1/0434/5249/8070/files/72379065846.pdf
- https://cdn.shopify.com/s/files/1/0428/6529/5526/files/lusuxor.pdf
- https://cdn.shopify.com/s/files/1/0432/4596/1383/files/zipafu.pdf
- https://cdn.shopify.com/s/files/1/0432/0306/8068/files/pukubalosevekuxapireda.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32773531818.pdf
- https://cdn.shopify.com/s/files/1/0431/2478/5319/files/migulinubugupoxulorubasol.pdf
- https://cdn.shopify.com/s/files/1/0427/8157/3279/files/15244949166.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00006eef.bin` `b0dad25e998c29219106dda5eab6bf801d690a4497648c55d776a012396d2ba8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6EEF	5196 bytes
`font_01_sfnt_off0000807b.bin` `dedee217f0c645a9d7dece7c783fc641b855496092a256bf4392393dda417d05`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x807B	10028 bytes
`font_02_sfnt_off0000a2fd.bin` `751f92ef85291b1701ea3386043310f9c552f4ef870028616695039d5d7a39ff`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA2FD	16120 bytes

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