PDF malware analysis — malicious · 02dcfd4761f8eccb

MALICIOUS

PDF

56.3 KB Created: 2020-08-20 03:03:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c08fe2f5acfdf185bb92946246bc176b SHA-1: 608a3afe09cadabbfe912ea14df8ccb9b523527c SHA-256: 02dcfd4761f8eccb6f335317ca95291c185d130cfbc279621258a944fa2a64d4

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many of which point to benign Shopify URLs, but one prominent link redirects to known malicious infrastructure at 'ttraff.cc'. The document's content, though garbled, appears to be a lure related to email writing examples, suggesting a phishing or redirection attempt. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=formal+and+informal+email+writing+examples+pdf
- http://files.kreativtouch.com/uploads/1/3/1/6/131637218/varaweralefemurubu.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/0711/5423/files/gafotozelejotuwumomuli.pdf
- https://cdn.shopify.com/s/files/1/0429/8519/3625/files/galaxy_s9_data_sheet.pdf
- https://cdn.shopify.com/s/files/1/0430/1481/5901/files/50823654512.pdf
- https://cdn.shopify.com/s/files/1/0428/9875/1641/files/rizarebot.pdf
- https://cdn.shopify.com/s/files/1/0450/4708/7262/files/bubblegum_crisis_rpg.pdf
- https://cdn.shopify.com/s/files/1/0429/5104/9370/files/28216655063.pdf
- https://cdn.shopify.com/s/files/1/0431/8766/7104/files/2012_returns_full_movie_in_tamil.pdf
- https://cdn.shopify.com/s/files/1/0432/1522/4996/files/migufobepapotapog.pdf
- https://cdn.shopify.com/s/files/1/0436/0136/3107/files/relete.pdf
- https://cdn.shopify.com/s/files/1/0440/9825/7048/files/tinesuruva.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000903a.bin` `cb0edff61f3a6e6eab01a239d8e5e446fe43a94d30c0cbcd6cfd406bf292988e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x903A	5476 bytes
`font_01_sfnt_off0000a2da.bin` `8347aec123bdefdecd3c7f4915deff54bf9ed401baa64475e3e4ddfdab14adf5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA2DA	15372 bytes

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