PDF malware analysis — malicious · 6f1994ebe3b3770f

MALICIOUS

PDF

42.6 KB Created: 2020-08-17 10:31:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c717044ead9a04744b521eb38d7b524f SHA-1: 996cf32719d6c1370cea8d6a681be73e65c2a487 SHA-256: 6f1994ebe3b3770f146f2904d009e6b4702413a85a6a1dfa5c619ab0c99c4a4c

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 external PDF files, suggesting a link farm or distribution mechanism. One critical heuristic identified a link to known malicious redirector infrastructure, indicating a potential phishing or malware distribution attempt. The ML classifier 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=best+time+blocking+app+android
- http://files.positivepyramidprogramming.com/uploads/1/3/2/6/132695354/vexiwute_fosuwodumapula_soxenadifanitud_botetejidodamo.pdf
- http://regew.holisticmommabear.com/uploads/1/3/0/8/130873791/vapemel.pdf
- http://files.transcendenttrip.com/uploads/1/3/2/6/132695629/sozivapozasuz_fuwutitonurow.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0437/0199/3622/files/12476304129.pdf
- https://cdn.shopify.com/s/files/1/0433/6274/6517/files/yasin_in_english.pdf
- https://cdn.shopify.com/s/files/1/0432/6332/8411/files/neralifadugarame.pdf
- https://cdn.shopify.com/s/files/1/0437/9800/3874/files/81774689690.pdf
- https://cdn.shopify.com/s/files/1/0434/5928/1061/files/cardiology_sheet.pdf
- https://cdn.shopify.com/s/files/1/0440/4091/3061/files/kotikonurigefavewon.pdf
- https://cdn.shopify.com/s/files/1/0432/2243/3953/files/guvufedam.pdf
- https://cdn.shopify.com/s/files/1/0435/4228/2394/files/febisosurewoja.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_off000068ca.bin` `fd77af5b842d7559f212a08917ffbbfa171304cc8a9bb980aebe955aeb25878d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68CA	5644 bytes
`font_01_sfnt_off00007bdc.bin` `34ed01e32dd7022f8e3cabd9107dc043d6cadea9c3ef6e906b2eb0eef779c8e8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BDC	9888 bytes

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