PDF malware analysis — malicious · b55effa72d4a22c5

MALICIOUS

PDF

36.5 KB Created: 2020-08-30 08:43:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f8caa96a0e546b21a310db199dc18885 SHA-1: 1212dc5c68640144d5d6d93bf5f33915820a340b SHA-256: b55effa72d4a22c5fe2852539a82299619717aaaf7c0ec3aac8031ef5bf2b5a3

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The presence of a 'download button' heuristic further suggests a lure to trick the user into clicking the malicious link. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern.

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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=365+days+of+writing+prompts In PDF document text
- https://static.usrfiles.com/ugd/e745be_3087030caeb44f2c9a9ed8a76ec26c70.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_1047222140094212abc2e0fb59586faf.pdfIn PDF document text
- https://static.usrfiles.com/ugd/4b68be_c9e910ceec5640be8362817a027e1945.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_965648b0150f4fe2a9a34765e31ff998.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_b11d34bfef5b4b889ad007d69733c5ae.pdfIn PDF document text
- https://static.usrfiles.com/ugd/51c472_c38d51f8d6c84056bf5134555c39b26e.pdfIn PDF document text
- https://static.usrfiles.com/ugd/20d83a_87bc18566e6d48e0b106ce96fb463d0b.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_e31805ad2bf1404c9b482ac49583b423.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_6dec61e7e5da4d4fb8f6a35a122a5161.pdfIn PDF document text
- https://static.usrfiles.com/ugd/cc089a_c6ec86f5106a492a90faa4db4c405d5e.pdfIn PDF document text
- https://static.usrfiles.com/ugd/45e30f_3bcd70597260423cb9f4c900fba144be.pdfIn PDF document text
- https://static.usrfiles.com/ugd/e1c37d_daddd2f131ac4aa19921c34196487f97.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000505f.bin` `caffd669900222a00ab11fb9112e49f0f554052ea5bfbc5dd22e6e0194da15c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x505F	5872 bytes
`font_01_sfnt_off00006450.bin` `2e7977ec39e036fe5a4d1b7d6f6b90a0310a82579b6fca639998a493ca162645`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6450	9832 bytes

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