PDF malware analysis — malicious · e11257420f19d22b

MALICIOUS

PDF

48.7 KB Created: 2020-09-02 00:13:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9d4e02cf0709db31d69f82792b830e3e SHA-1: 761115153778dfeffceaa977e9ebc1956a9da371 SHA-256: e11257420f19d22bb33842e3c7e73dcb6252075c079c1f7264c1fb2899d49378

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link disguised as a user manual that redirects to malicious infrastructure. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms this, and the SE_URGENCY_LURE heuristic suggests a social engineering tactic. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger link farm, likely for SEO manipulation or to distribute malicious content. The primary IOC is the malicious redirector URL.

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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.ru/pify?keyword=bosch+fridge+freezer+user+manual
- https://static.usrfiles.com/ugd/cc15ef_3208dd625318456ca294de910cae68b3.pdf
- https://static.usrfiles.com/ugd/e1d12c_030514a749904695ac664e876e2ffae4.pdf
- https://static.usrfiles.com/ugd/defdb4_078392c9edf4410db6a0f03edbcfdefe.pdf
- https://static.usrfiles.com/ugd/f99735_b42307381b694a5b8d69f5ff5716fa09.pdf
- https://static.usrfiles.com/ugd/ea78e0_3718888e035f43f4914e0e3aa51874cf.pdf
- https://static.usrfiles.com/ugd/1fbf8b_18d4ab405c324e76873ff1f1205222c4.pdf
- https://static.usrfiles.com/ugd/f7fbc8_6a0d29b00ca84cb3955fdf101050a87d.pdf
- https://static.usrfiles.com/ugd/36d413_a11f769b7036478d8c213f2f6eb40f7b.pdf
- https://static.usrfiles.com/ugd/de65f7_69927f6b8a7d4e158f9f698dc09f9a0a.pdf
- https://static.usrfiles.com/ugd/2f3ac6_4fecaaf5105d406ba678e2cd4c46a166.pdf
- https://static.usrfiles.com/ugd/b8c837_8e04610e10ff46a4b195ffd7d0581162.pdf
- https://static.usrfiles.com/ugd/9374a7_ea55e42a6dab44fca32d6e7181ad6484.pdf
- https://static.usrfiles.com/ugd/7f16bd_c8eae8fa43c74f36a1e9e5459ee58e5d.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_off000073ad.bin` `f48ec2fe461d88c85e83a42cb9654b4730972af635814bce886271691dd58a24`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73AD	5336 bytes
`font_01_sfnt_off000085a9.bin` `25d4eccd8601b75852105d2c0dff1285e14a4b1a26314063ac8a42e44be9eade`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85A9	10044 bytes
`font_02_sfnt_off0000a7f4.bin` `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA7F4	4324 bytes

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