PDF malware analysis — malicious · d2648f8493167e90

MALICIOUS

PDF

43.9 KB Created: 2020-08-30 12:10:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e229f449a04915837eb3617fb72690bf SHA-1: 59664553a73c31cb10e076191199aca84659858c SHA-256: d2648f8493167e9058aab1f80f94550fa7911d08a16195b40afa54dfa1daa3a5

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with a critical heuristic firing for a PDF link farm. One of the primary links points to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body appears to be corrupted or heavily encoded, but the presence of the malicious URL is sufficient to assess the attack pattern.

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.com/wix?keyword=s%2527+exprimer+%25C3%25A0+l%2527+oral+exercices
- https://static.usrfiles.com/ugd/b8c837_568de4dcaec448ea9f98eaad08b503d2.pdf
- https://static.usrfiles.com/ugd/b8c837_a55c3657c1c346ceb08a8fe36e0100b7.pdf
- https://static.usrfiles.com/ugd/0dcf4b_1d0a4b3ae78e4bc3af17b550a2c44191.pdf
- https://static.usrfiles.com/ugd/510a18_bf9f046b03814f448cdc410e294a59c8.pdf
- https://static.usrfiles.com/ugd/b85eb0_377ecfbc8c9c426ca63c0df7f834fee7.pdf
- https://static.usrfiles.com/ugd/b8c837_6d9ff9cda2bc4181aee707072540467a.pdf
- https://static.usrfiles.com/ugd/930050_31bdb57cf4ff4a2e8660790c65352557.pdf
- https://static.usrfiles.com/ugd/e2c250_1ce695a768a34b1db87b36ca1b196ec7.pdf
- https://static.usrfiles.com/ugd/2f3ac6_f40f172b62754da1920f69ff49b87db4.pdf
- https://static.usrfiles.com/ugd/39cb9d_183ae47b86a64322a38058ea1d9ef410.pdf
- https://cdn.shopify.com/s/files/1/0431/5293/3019/files/28963648591.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.pdf
- https://cdn.shopify.com/s/files/1/0432/7954/8580/files/lesegazilubinesotefanosal.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000068ec.bin` `363fded5c00a1e544ceb5a3f93bb482d0ba674ef899ee59c3d93d0ab4bf2347d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68EC	5520 bytes
`font_01_sfnt_off00007b0f.bin` `cb822175c9df09f3d30e971c442edb682af06669803c016d2f2334d77c5f3276`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B0F	12156 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.