PDF malware analysis — malicious · 031ed12e1d5fd073

MALICIOUS

PDF

42.1 KB Created: 2020-08-31 13:07:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f0d49b52376b379ba3f4a720d487efcc SHA-1: 1be7ca2661442ed079ff2b21cf9359358d06933a SHA-256: 031ed12e1d5fd0738dd88dac27b82f5697e541139acf5e2fc8f94127f708a4de

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one prominently featuring 'fifty shades trilogy ebook' in its URL, suggesting a lure to entice clicks. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms that the primary link leads to known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or redirection attempt, likely initiated via spearphishing.

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.club/wix?keyword=fifty+shades+trilogy+ebook
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/33a2e4_5c2e7b0ec59f4f7ab9ac2bacbd68f3d8.pdf
- https://static.usrfiles.com/ugd/529dbf_c4c62d3ba21a4ba090f2e15a94677293.pdf
- https://static.usrfiles.com/ugd/f09a9d_e78edfa5fd6c4f0f8cba876c1d066863.pdf
- https://cdn.shopify.com/s/files/1/0435/1524/8794/files/23654102783.pdf
- https://cdn.shopify.com/s/files/1/0429/9417/2058/files/gumegusigivewujotuvibora.pdf
- https://cdn.shopify.com/s/files/1/0435/5024/5028/files/mipoje.pdf
- https://cdn.shopify.com/s/files/1/0427/5752/1574/files/95394580584.pdf
- https://cdn.shopify.com/s/files/1/0431/1128/4885/files/80968103451.pdf
- https://static.usrfiles.com/ugd/b8c837_232b2ce46f504b449e36880dc647fa5a.pdf
- https://static.usrfiles.com/ugd/b8c837_44efff5c5cb9483fa3f7557a02b30d8d.pdf
- https://static.usrfiles.com/ugd/1a89c8_7b1e3e611bd0445c840fdae6349127b4.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_off00006078.bin` `bb0f4914769a1c21dc9b569202d651190924e763c22b36a49c798ee2bb57af21`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6078	5428 bytes
`font_01_sfnt_off000072f9.bin` `c9c941bdf8036f621206ecb9523fb6615e8073caaa59ea1ff1df134e484a3aca`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72F9	13652 bytes

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