PDF malware analysis — malicious · 6f691fd342fe3612

MALICIOUS

PDF

42.6 KB Created: 2020-09-04 22:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5c5c0bca7577ed75e293a65aed17b139 SHA-1: 61489ce6081a76834708b1f3da5e16255d2b7357 SHA-256: 6f691fd342fe361276e7ffc2cb49693a9fb3bb9564be5ed62fadae7aa22706f6

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm or spam operation. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to potentially harmful 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/wix?keyword=anemia+de+celulas+falciformes+pdf+pediatria
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/8693/7253/files/47945867289.pdf
- https://cdn.shopify.com/s/files/1/0432/1394/7041/files/the_all_souls_trilogy.pdf
- https://cdn.shopify.com/s/files/1/0437/3214/0186/files/77470273405.pdf
- https://static.usrfiles.com/ugd/b8c837_8eafda8cdabe4d9e95f107198542fcfc.pdf
- https://static.usrfiles.com/ugd/48f461_b32325e245984748b2810ca5b34b8938.pdf
- https://static.usrfiles.com/ugd/b8c837_33b5473b48854912a814f3597e7a1539.pdf
- https://static.usrfiles.com/ugd/81d6a4_f7c8a3fa2a17461a825cffc3ba1b7290.pdf
- https://static.usrfiles.com/ugd/ffe0d3_e936496c60c84873a0c44645e74f21f4.pdf
- https://static.usrfiles.com/ugd/440e29_7da82d7378024c6aa6d383defed6b48b.pdf
- https://static.usrfiles.com/ugd/a32c20_45aa48dcd03543adb82cc7b66387930e.pdf
- https://cdn.shopify.com/s/files/1/0429/1880/5657/files/teninaserazefode.pdf
- https://cdn.shopify.com/s/files/1/0430/9411/4465/files/13763311411.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_off0000688c.bin` `07eeb80737bc8902cc1c9f2c840c2181157f1a20934812bae569724dd311ab47`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x688C	5288 bytes
`font_01_sfnt_off00007a76.bin` `4c0067f585fd4c4fc2f9abde1f3ef4b9a25b6eee824100edd39e7eed4aed448d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A76	10360 bytes

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