PDF malware analysis — malicious · 0cd557ca22a09824

MALICIOUS

PDF

43.4 KB Created: 2020-08-21 06:52:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 05deb9cb2b15133ac8a1da90f9da5ef6 SHA-1: c033b424d6df35246f8ccbd19978674fd6d9e35d SHA-256: 0cd557ca22a09824132a5107c723306b23b3a543d3b58c87978403332cb9a2b1

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a link that redirects to a malicious domain, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=autograph+movie+full+hd, which is likely intended to trick users into clicking it. The presence of numerous external PDF links also suggests a link farm or SEO manipulation tactic.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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=autograph+movie+full+hd
- http://ziwus.dennistromburg.com/uploads/1/3/1/3/131384284/kixokivebafolitudak.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0432/6329/5646/files/38544573866.pdf
- https://cdn.shopify.com/s/files/1/0439/1128/2843/files/fofalanuvigupepesuwoza.pdf
- https://cdn.shopify.com/s/files/1/0429/2860/3295/files/72859176995.pdf
- https://cdn.shopify.com/s/files/1/0450/5636/0600/files/classification_bethesda_2020.pdf
- https://cdn.shopify.com/s/files/1/0429/2083/7287/files/advanced_algorithms_in_java.pdf
- https://cdn.shopify.com/s/files/1/0432/3134/6856/files/94479284870.pdf
- https://cdn.shopify.com/s/files/1/0435/4175/8101/files/cookie_clicker_2.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
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005763.bin` `87ab107778b965b3298da0031fbc11615fec55ff73283a643fc66d57e18f64ec`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5763	5328 bytes
`font_01_sfnt_off0000696a.bin` `f78eeb781e8066a48bef1be78e2012630dcb6037c0705e7ad4edf59c7678fb6b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x696A	10040 bytes
`font_02_sfnt_off00008bce.bin` `c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BCE	16164 bytes

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