PDF malware analysis — malicious · 0b3c8225e69409f7

MALICIOUS

PDF

57.3 KB Created: 2020-08-31 00:39:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 519a0b3aeb1400dc298ff2272245e6d6 SHA-1: 45397551eaef0e0561c1b903e12c3f33faa37cbc SHA-256: 0b3c8225e69409f72a30dae7f5233af84b4056d824e74d2a311392497f590b45

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body also contains this URL, suggesting an attempt to trick users into clicking it. The presence of numerous other PDF links, many pointing to Shopify, indicates a link farm strategy. The ML classifier also strongly flagged this PDF as malicious.

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=el+desafio+del+amor+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0429/9993/9235/files/jexizuzuzojubidibonikatos.pdf
- https://cdn.shopify.com/s/files/1/0432/3039/6574/files/72567455426.pdf
- https://cdn.shopify.com/s/files/1/0432/2449/8333/files/xidasimirasuve.pdf
- https://cdn.shopify.com/s/files/1/0435/9628/4062/files/adobe_reader_dc_scan_to.pdf
- https://static.usrfiles.com/ugd/3615fb_58cb6c4490134c47bb5606fc0f845d66.pdf
- https://static.usrfiles.com/ugd/ab059d_1dab7ea80d324f1fad9c4359255b3176.pdf
- https://static.usrfiles.com/ugd/b8c837_ecdd369a514c4b62820ed775c77ba857.pdf
- https://static.usrfiles.com/ugd/fe83c3_fe6b32afe8804738b50a74af49db20f2.pdf
- https://static.usrfiles.com/ugd/b8c837_d762bab8e367463a80d8b9eff268446d.pdf
- https://static.usrfiles.com/ugd/eed56f_5159f66a4ea64943935e85a911dbd8cc.pdf
- https://static.usrfiles.com/ugd/fd7405_d6d533bae0a94174a4a91cc11328c657.pdf
- https://static.usrfiles.com/ugd/b8c837_1e0d82353fcf42f18595ed52e8a2d523.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_off0000a177.bin` `01f831b54a3d046bf93d7142ea654ca759d29197ba7939dff799e758c34d0167`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA177	5144 bytes
`font_01_sfnt_off0000b2e6.bin` `3e59f66aabeb9cc6e6b1d84cceda1079eedc6708bba60910a1bd1ceed2bde250`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB2E6	11208 bytes

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