PDF malware analysis — malicious · 04082df09c0cee72

MALICIOUS

PDF

40.2 KB Created: 2020-08-23 13:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b0060b77437b81790e659a10ac498a96 SHA-1: fd18afde6d3b41e3bf58956550d869a8ee3c2560 SHA-256: 04082df09c0cee72f4ea69b165a2fa8b0559b43e9f72497006c2cd9c4fba23ae

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by multiple heuristics, including a critical alert for redirecting to known malicious infrastructure. It contains a large number of embedded URLs pointing to a link farm hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute further content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=analytical+questions+and+answers+pdf.

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=analytical+questions+and+answers+pdf
- http://files.tasteoftherunway.com/uploads/1/3/1/6/131606854/3314657.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/0804/0853/files/65220880766.pdf
- https://cdn.shopify.com/s/files/1/0432/9373/7118/files/developing_critical_and_creative_thinking_skills.pdf
- https://cdn.shopify.com/s/files/1/0430/2667/7913/files/notevumekorasa.pdf
- https://cdn.shopify.com/s/files/1/0430/6747/4087/files/26534668226.pdf
- https://cdn.shopify.com/s/files/1/0432/2567/7982/files/17974343769.pdf
- https://cdn.shopify.com/s/files/1/0428/7784/5671/files/sonosubipiver.pdf
- https://cdn.shopify.com/s/files/1/0431/0522/2822/files/72088555597.pdf
- https://cdn.shopify.com/s/files/1/0436/3878/4158/files/50986904966.pdf
- https://cdn.shopify.com/s/files/1/0433/0323/9835/files/varagexemipu.pdf
- https://cdn.shopify.com/s/files/1/0433/6756/3429/files/12135535648.pdf
- https://cdn.shopify.com/s/files/1/0431/4556/0219/files/jizukukazisi.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_off00006075.bin` `6e496e833166faa219b6d47d41ed94f0e521a80f57ee5c8a3189448c830ca4c4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6075	5456 bytes
`font_01_sfnt_off00007325.bin` `ed37db0a1785d2ca1d147fb72a22f1650eaf0a2b547c67530d5591a8db38032a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7325	9672 bytes

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