PDF malware analysis — malicious · ba8f4ecac9ef7fc0

MALICIOUS

PDF

42.3 KB Created: 2020-09-02 17:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a46c27c908ce04638f27fe4bc5e8a893 SHA-1: d6764a1e05bca67b401f34c1ed720e39ce556320 SHA-256: ba8f4ecac9ef7fc061fba2c1adad1bdc70c325f21d7c0bfd6e72229fe539ef26

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.me/wix?keyword=color+by+number+worksheets+for+first+grade'. This indicates a social engineering attempt to direct users to malicious infrastructure, likely for further exploitation or credential harvesting. The document body, though partially corrupted, suggests a lure related to educational worksheets.

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.me/wix?keyword=color+by+number+worksheets+for+first+grade
- https://static.usrfiles.com/ugd/77eba6_a52961b3322541f1a65ca2dbd452c813.pdf
- https://static.usrfiles.com/ugd/0c4177_6d4a1c628ddd481f95433c06d9d84ca2.pdf
- https://static.usrfiles.com/ugd/38bf1f_570178a32124493ea7d6a19b8d52e334.pdf
- https://static.usrfiles.com/ugd/5438e3_bf9bab2473b2414f8bf4168073178354.pdf
- https://cdn.shopify.com/s/files/1/0430/8297/3346/files/jaxifuxukapare.pdf
- https://cdn.shopify.com/s/files/1/0434/2880/6806/files/81314822522.pdf
- https://cdn.shopify.com/s/files/1/0433/7342/8888/files/bajimuxivobivaxisidu.pdf
- https://cdn.shopify.com/s/files/1/0457/4923/9964/files/3715656508.pdf
- https://cdn.shopify.com/s/files/1/0437/1005/4554/files/15521913703.pdf
- https://static.usrfiles.com/ugd/b8c837_51e18f378204404bb747b8fc34048345.pdf
- https://static.usrfiles.com/ugd/b8c837_ba4fcba78bb44246888a06045ce488c5.pdf
- https://static.usrfiles.com/ugd/7dd30d_2f70ff6ec8a04c0a87932b94dc088d30.pdf
- https://static.usrfiles.com/ugd/2f7815_89623526879c4d118e7ece689e196e89.pdf
- https://static.usrfiles.com/ugd/696b8a_9ea0c96c3a074d3d8eb5f316103b0570.pdf
- https://static.usrfiles.com/ugd/b8c837_e970a08bb34040f18b03cb4b73bfd364.pdf
- https://static.usrfiles.com/ugd/0c268c_a7f500297a5b435394ca893120b4572b.pdf
- https://static.usrfiles.com/ugd/0d002d_bd5b7045e14b4b28aaf3081e28454f87.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_off00006572.bin` `4845fbae11385dc94b0b21bb1e0a6bb76490c1d63206239f449c9b030303a193`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6572	5624 bytes
`font_01_sfnt_off00007877.bin` `2ca5b67c1cc88bd4b64420c8a200caab25da7f5c83f4a904ba8e19effa558b2a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7877	10532 bytes

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