PDF malware analysis — malicious · 5d344335d84e5fc7

MALICIOUS

PDF

127.3 KB Created: 2020-07-30 20:22:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 09aacb5cff1843f85f6b888aa16bc212 SHA-1: 5934857fc4e43a60c4e57add4186f0704e10aac5 SHA-256: 5d344335d84e5fc7631614278e3e0ad4b08c245ac23f6811c9689ca714dafc68

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a significant number of embedded links, many pointing to Shopify-hosted PDF files, forming a link farm. One of the primary links redirects to a known malicious domain (ttraff.ru), indicating a likely phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=que+son+los+ansioliticos+pdf
- http://files.rehellisetuutiset.org/uploads/1/3/0/7/130776485/xifexumiget.pdf
- http://files.mathwitheeesinc.com/uploads/1/3/1/4/131483108/1329259.pdf
- http://files.cheyennecoffeeco.com/uploads/1/3/1/3/131379439/6204247.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0429/9338/5633/files/dowenudopig.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zorosibal.pdf
- https://cdn.shopify.com/s/files/1/0431/5460/4198/files/xibuz.pdf
- https://cdn.shopify.com/s/files/1/0434/5564/3813/files/fajizigegefoguzenov.pdf
- https://cdn.shopify.com/s/files/1/0434/4279/8757/files/18397770853.pdf
- https://cdn.shopify.com/s/files/1/0433/1018/6654/files/96174386745.pdf
- https://cdn.shopify.com/s/files/1/0433/2634/1272/files/46784045132.pdf
- https://cdn.shopify.com/s/files/1/0440/7531/9448/files/namilojuna.pdf
- https://cdn.shopify.com/s/files/1/0427/9864/5404/files/pazurumojuk.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_off0001b6a5.bin` `18ebeed36e404aaf618db4913d925ba2f45fc59c4f5b8b4c6cd096a7eb2301c8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1B6A5	4996 bytes
`font_01_sfnt_off0001c7b6.bin` `629abf49e7834b6caffdfc6f4ba2825f0c7a4a76f38504a3fdb2daa2d21b4cb9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1C7B6	11784 bytes

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