PDF malware analysis — malicious · b6bb56f88b4a0824

MALICIOUS

PDF

39.8 KB Created: 2020-08-03 03:43:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0572d0456402bd00cfe1e75bd79659e0 SHA-1: 09efcb63daeebff1ffa00ea13acca9a5a1b66fb3 SHA-256: b6bb56f88b4a0824f6c53c7fa0668b0879af047ee145ead048a37cbe2a69108f

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file exhibits characteristics of a link farm designed to manipulate SEO and redirect users to malicious content. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK firing indicates a direct link to a known malicious redirector, ttraff.com. The PDF_SEO_LINK_FARM heuristic confirms the presence of numerous external PDF links, many hosted on cdn.shopify.com, suggesting a broad distribution strategy. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of the document. The embedded URL in the document body, https://ttraff.com/pify?keyword=no+man%2527+s+sky+residual+goop, is a primary indicator of malicious redirection.

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=no+man%2527+s+sky+residual+goop
- http://files.salonrhapsody.com/uploads/1/3/1/3/131381540/tigumevoxexutoji.pdf
- http://files.painting.zone/uploads/1/3/2/8/132815045/4932041.pdf
- http://lisal.elisafriedlander.com/uploads/1/3/1/4/131409909/4820468.pdf
- https://cdn.shopify.com/s/files/1/0428/9724/4316/files/xazojurasatod.pdf
- https://cdn.shopify.com/s/files/1/0431/7495/3120/files/drag_me_to_hell_ending.pdf
- https://cdn.shopify.com/s/files/1/0427/7141/5196/files/33909748245.pdf
- https://cdn.shopify.com/s/files/1/0435/3451/6376/files/biborudi.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23281911610.pdf
- https://cdn.shopify.com/s/files/1/0433/1690/4104/files/59106667719.pdf
- https://cdn.shopify.com/s/files/1/0440/8298/7158/files/brother_hl-_l6200dw_driver.pdf
- https://cdn.shopify.com/s/files/1/0431/2327/7973/files/sakopiwomafa.pdf
- https://cdn.shopify.com/s/files/1/0431/0840/1316/files/la_salette_message.pdf
- https://cdn.shopify.com/s/files/1/0430/3912/9751/files/6563917505.pdf
- https://cdn.shopify.com/s/files/1/0430/8716/7645/files/65868815065.pdf
- https://cdn.shopify.com/s/files/1/0431/5381/7762/files/lerol.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_off00005dfa.bin` `7283b882f218fd987c8ab64273ce8352b120f835135a518dbddcfef4fe5cad4c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DFA	5448 bytes
`font_01_sfnt_off00007084.bin` `ed54e6d7ca0bd7572382b6bc868cf879311166f2ce57d7bd5bc8cb3a41ae8e3c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7084	10024 bytes

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