PDF malware analysis — malicious · 883c4e9b45ba94d2

MALICIOUS

PDF

65.1 KB Created: 2020-08-06 02:25:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bca61f6aa630d57c26d26666bfbfe29c SHA-1: 0bda9a50b18f59ef870064351e9581d032d05cca SHA-256: 883c4e9b45ba94d2efb2c0a01d818a2456664d189054fc208095216f4b98c725

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'CGST Act 2020 PDF in Telugu' and the malicious URL, suggesting a lure to trick users into clicking the malicious link. The ML classifier also 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.ru/pify?keyword=cgst+act+2020+pdf+in+telugu
- http://files.senecahistory.com/uploads/1/3/0/7/130739204/6270223.pdf
- http://virexekus.keithnickels.com/uploads/1/3/1/6/131606490/maseb-wivobavitirapor-topew.pdf
- http://files.leximayde.com/uploads/1/3/1/3/131380005/4809868.pdf
- https://cdn.shopify.com/s/files/1/0431/9353/2573/files/tiruwuwanexatotijijodi.pdf
- https://cdn.shopify.com/s/files/1/0429/8519/3621/files/27637336081.pdf
- https://cdn.shopify.com/s/files/1/0434/4319/1969/files/kanuburobivazopowinebuz.pdf
- https://cdn.shopify.com/s/files/1/0427/6387/8566/files/jipamopesagax.pdf
- https://cdn.shopify.com/s/files/1/0437/9302/3133/files/22446732610.pdf
- https://cdn.shopify.com/s/files/1/0428/8145/0147/files/94047876901.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19463184481.pdf
- https://cdn.shopify.com/s/files/1/0427/7141/5196/files/fejetifadokoxufefeser.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ropuxikasafomudixaxo.pdf
- https://cdn.shopify.com/s/files/1/0435/4277/3914/files/24574179842.pdf
- https://cdn.shopify.com/s/files/1/0427/4746/1788/files/91688608168.pdf
- https://cdn.shopify.com/s/files/1/0430/5331/8298/files/99863819869.pdf
- https://cdn.shopify.com/s/files/1/0431/7849/2072/files/wavemamamiletepege.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_off0000aa33.bin` `a339468f4a12b1a45bb6b6ef4607f46ba9d1939aae933c9df56279ae2a05b086`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAA33	5404 bytes
`font_01_sfnt_off0000bcb4.bin` `786649d6feb7863b02dafcf2ed871632f52ebc5b816518520be21ebd907906f9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBCB4	14004 bytes
`font_02_sfnt_off0000e8ea.bin` `83249af15dbd850b744e42040910dc4f5ba0aa375d256efb5afbc0ee2d5f0739`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE8EA	3288 bytes

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