PDF malware analysis — malicious · 059d9cdeb866cc01

MALICIOUS

PDF

38.7 KB Created: 2020-09-04 21:30:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8b26c5e8ec8d489c9a3ddcfbbb201b3a SHA-1: 40980c22168697ce8839134edcf451ca3a14e254 SHA-256: 059d9cdeb866cc016a158a63ee7ad3d02c460db39269cc4c73e541a861ad391d

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'free coffee shop menu design templates' and a URL pointing to the redirector. This suggests a phishing or scam attempt to redirect users to malicious content.

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.me/pify?keyword=free+coffee+shop+menu+design+templates
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/4725f1_829c34fc02984677b0bf9209cf630608.pdf
- https://static.usrfiles.com/ugd/c1615c_c44369fb86d642bea430484a45d9de68.pdf
- https://static.usrfiles.com/ugd/516793_17aeef2b54a146308be0663e21a7ac6e.pdf
- https://static.usrfiles.com/ugd/b8c837_0498c0ee08044bf8bb70d73c57a1bc4a.pdf
- https://cdn.shopify.com/s/files/1/0463/0380/5600/files/chris_tomlin_angels_we_have_heard_on.pdf
- https://cdn.shopify.com/s/files/1/0432/4445/4056/files/pre_algebra_rules.pdf
- https://static.usrfiles.com/ugd/3b47cb_607173e4d07441c783f222e431f97c4f.pdf
- https://static.usrfiles.com/ugd/83f04e_b946c0b0a046499faa4d85b02b0633d8.pdf
- https://static.usrfiles.com/ugd/08fe48_94e4dda430b5463a876a22b4ac55bcaf.pdf
- https://static.usrfiles.com/ugd/b8c837_8a102dd05cd640c09c166b36a8101432.pdf
- https://static.usrfiles.com/ugd/a51aec_c9b954508aa04905bc500a5dac29b824.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_off000059dc.bin` `831cc9c225fd85732e0783e540e909726323dd95399ed3fad57be52093c4bd8c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x59DC	5524 bytes
`font_01_sfnt_off00006c82.bin` `578807afb09f5d918f3a07c870ad48514c43d4f93e969b3f791963287233327b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C82	9884 bytes

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