PDF malware analysis — malicious · a886c2d6c097de4c

MALICIOUS

PDF

37.9 KB Created: 2020-08-31 03:22:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: be398d5bc93e9600e39ad56e8c037e38 SHA-1: 619a41775222bc571f65221237ad37a675676937 SHA-256: a886c2d6c097de4c6d19aae80efe379bba152b84335deabcc5f446b3f2d94fce

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external links, suggesting a link farm or phishing attempt. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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.cc/wix?keyword=sgt+pepper+wallpaper
- https://cdn.shopify.com/s/files/1/0435/2655/3755/files/8841217631.pdf
- https://cdn.shopify.com/s/files/1/0429/7952/4759/files/xorusutijopusizujamapaja.pdf
- https://cdn.shopify.com/s/files/1/0431/5407/9904/files/kumon_answer_book_level_h_math.pdf
- https://static.usrfiles.com/ugd/b8c837_ed4c20ac26ab43e2b305166b466f6bc4.pdf
- https://static.usrfiles.com/ugd/b914b5_d0756a00dcd344cca85ad0272a7b9568.pdf
- https://static.usrfiles.com/ugd/b8c837_96a059437a0649ac9aaf8f377b63c9d4.pdf
- https://static.usrfiles.com/ugd/a48928_2286b214f20b4c058c7e29108c68cb16.pdf
- https://static.usrfiles.com/ugd/bfbc46_10577f3a0815436b86de4ba4da2279ce.pdf
- https://static.usrfiles.com/ugd/e73fea_b535ef529b1b4912923a24493da0c891.pdf
- https://static.usrfiles.com/ugd/a91264_863369293d8743a3bc801a1519b58a34.pdf
- https://static.usrfiles.com/ugd/b8c837_1efd6712ad2f4dc89fe8337ef8203db9.pdf
- https://static.usrfiles.com/ugd/ab922d_6104c16e39ef48bd93b534f16bde1710.pdf
- https://static.usrfiles.com/ugd/b8c837_57428347f6fc468890c7973cfa0577a9.pdf
- https://static.usrfiles.com/ugd/79cb75_ddb155dca6b04c82ae6761554ff69947.pdf
- https://static.usrfiles.com/ugd/b8c837_7fa031943cc14e4887eb4feb4f9d60d0.pdf
- https://static.usrfiles.com/ugd/003b86_ba57a951204b4ca490ed33bd188c97fd.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004b7c.bin` `df75afec3d6c3a384f5e8ca42921cecbf2dafea8d9ba7c901ace81a2bc8bafa7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B7C	4528 bytes
`font_01_sfnt_off00005afa.bin` `86a6e888b01a0d14349ffc1f12d5b74f2a9e3f274c4bda27fcee806a259a3668`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5AFA	9920 bytes
`font_02_sfnt_off00007ca8.bin` `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7CA8	4324 bytes

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