PDF malware analysis — malicious · 9dcede90e8b3ed9f

MALICIOUS

PDF

45.5 KB Created: 2020-08-17 10:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 006e3942b0133fa520fbec5309cc0165 SHA-1: e5327a4dd078d267d346d33f7664abbf5ec4edd5 SHA-256: 9dcede90e8b3ed9f0d6dd3c73624f96c9f839adf5b1d3874c546994fafe0168f

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). The document body text, though heavily obfuscated, contains the same lure text as the malicious URL. This suggests a phishing or scam attempt designed to redirect users to malicious content. 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.com/pify?keyword=java+project+source+code+free
- http://files.ildjservices.com/uploads/1/3/2/6/132681865/20f47a8d236882.pdf
- http://files.liveactivepc.com/uploads/1/3/0/7/130739274/4230709.pdf
- http://files.puressecosmetics.com/uploads/1/3/0/7/130739978/pefewojuro_tapudakinifi_dubanagonik_vunejovewetupe.pdf
- https://cdn.shopify.com/s/files/1/0429/6425/4883/files/nikodemuwivagudezalem.pdf
- https://cdn.shopify.com/s/files/1/0430/7940/1634/files/dafeborurin.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdf
- https://cdn.shopify.com/s/files/1/0430/6819/4978/files/piwudemolunakewosuvidapub.pdf
- https://cdn.shopify.com/s/files/1/0443/1478/7996/files/33327214448.pdf
- https://cdn.shopify.com/s/files/1/0429/9869/4042/files/xipizenijukunu.pdf
- https://cdn.shopify.com/s/files/1/0433/9797/2135/files/lavenevukapiwulolopa.pdf
- https://cdn.shopify.com/s/files/1/0427/9622/0572/files/manusia_merupakan_makhluk_sosial.pdf
- https://cdn.shopify.com/s/files/1/0439/8222/5566/files/77619760725.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdf
- https://cdn.shopify.com/s/files/1/0433/7749/2118/files/emotional_regulation_worksheets_for_adults.pdf
- https://cdn.shopify.com/s/files/1/0438/2133/4690/files/android_studio_tutorial_streaming_video.pdf
- https://cdn.shopify.com/s/files/1/0429/9427/0371/files/agnieszka_macig_penia_ycia.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_off000068ea.bin` `de665f1fbddfd7a349a55e761d2a9ce34fb08bb3ff352cef8696e0e310c3f15a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68EA	5240 bytes
`font_01_sfnt_off00007ada.bin` `603da084c0fcefa170f8c003abdbfc9a6f5360786a4014e9a8597690e013978e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7ADA	14576 bytes

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