PDF malware analysis — malicious · b2709656172619a6

MALICIOUS

PDF

53.1 KB Created: 2020-08-02 17:21:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b1a0491c7a8d3cc62dd8fda2af4a1285 SHA-1: e81c0314b0474967e56cefd5dd6d6e3368c989bc SHA-256: b2709656172619a6f618a9a7e8e45446894317737f6ad66d908aed42a418e960

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a mass of external links, many of which point to a redirector service. The primary malicious link identified is 'https://ttraff.cc/pify?keyword=lol+sejuani+build', which is designed to lead users to potentially harmful content. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a phishing or redirection scheme. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=lol+sejuani+build
- http://files.darrellanded.com/uploads/1/3/1/4/131407088/95ba5b93026a44.pdf
- http://files.learningcafe.us/uploads/1/3/1/4/131437926/ba0b18bcc2e6e.pdf
- http://files.longjourneyhome.net/uploads/1/3/0/7/130739287/perovibu.pdf
- https://cdn.shopify.com/s/files/1/0431/3009/3728/files/gajalijuvitexutaliri.pdf
- https://cdn.shopify.com/s/files/1/0430/3598/4029/files/65675130623.pdf
- https://cdn.shopify.com/s/files/1/0431/6489/3344/files/39556404169.pdf
- https://cdn.shopify.com/s/files/1/0430/4742/0066/files/23291094154.pdf
- https://cdn.shopify.com/s/files/1/0437/6972/5080/files/91529793464.pdf
- https://cdn.shopify.com/s/files/1/0430/7487/9641/files/sowebugosaxilemetok.pdf
- https://cdn.shopify.com/s/files/1/0432/0156/0737/files/49735047354.pdf
- https://cdn.shopify.com/s/files/1/0430/6855/5415/files/kerajadesetiruvadojijet.pdf
- https://cdn.shopify.com/s/files/1/0428/9904/6553/files/kuwigiwuzeturadowadod.pdf
- https://cdn.shopify.com/s/files/1/0433/3866/2053/files/sukubof.pdf
- https://cdn.shopify.com/s/files/1/0431/1177/6416/files/59255030892.pdf
- https://cdn.shopify.com/s/files/1/0427/5326/1724/files/taluvebifulapunujuma.pdf
- https://cdn.shopify.com/s/files/1/0429/8942/0695/files/71762093881.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_off000078b5.bin` `86413889889b7c5173cad9a07e4a546a34b82a54c5e5bd7661e6487ade4fe144`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78B5	4684 bytes
`font_01_sfnt_off0000889e.bin` `ba78b528d6f1ecf34e6a44aacb84765b032dcf41af81dbc3d57cf0a3ac96e3b5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x889E	15956 bytes
`font_02_sfnt_off0000b975.bin` `d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB975	4324 bytes

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