PDF malware analysis — malicious · 3be08878765613b5

MALICIOUS

PDF

45.2 KB Created: 2020-08-20 14:22:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e7dddbff4bb656816605577ed220f6c6 SHA-1: 513feb04fe6658d03c742c90476ab700f2df225b SHA-256: 3be08878765613b5f5f646c4956b301cc8db2622b57e69b381988f109bddb620

154 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 pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary malicious URL is 'https://ttraff.com/pify?keyword=hp+elitedesk+800+g4+sff+datasheet', which is likely used to redirect users to a phishing or malware distribution site.

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.com/pify?keyword=hp+elitedesk+800+g4+sff+datasheet
- http://files.justmytour.com/uploads/1/3/0/9/130969061/082bab.pdf
- http://files.mrsalexaeby.com/uploads/1/3/1/8/131856372/jinuwawoxe.pdf
- https://cdn.shopify.com/s/files/1/0453/9475/5752/files/nickel_iron_alloys.pdf
- https://cdn.shopify.com/s/files/1/0427/7754/2823/files/31101130757.pdf
- https://cdn.shopify.com/s/files/1/0432/2590/7368/files/situpemokibiponusu.pdf
- https://cdn.shopify.com/s/files/1/0438/2516/8544/files/acedias_medicina.pdf
- https://cdn.shopify.com/s/files/1/0432/5077/8269/files/multivariate_analysis_in_spss.pdf
- https://cdn.shopify.com/s/files/1/0431/6925/1492/files/hbr_case_study_free.pdf
- https://cdn.shopify.com/s/files/1/0427/8275/2935/files/chava_kadambari_download.pdf
- https://cdn.shopify.com/s/files/1/0428/1804/4063/files/16747898132.pdf
- https://cdn.shopify.com/s/files/1/0433/1700/2405/files/zefapujizivibikumipaji.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_off00006688.bin` `52d2b63fa4e96f57edda576841b500ee76ac307fa88e9421c33bb2c34ec02300`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6688	5656 bytes
`font_01_sfnt_off000079ca.bin` `8bfef2c3ddb16ed920b34dd73d4b11f26aa065eeae992754c6aa879499c880e5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x79CA	15152 bytes

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