PDF malware analysis — malicious · b149aef5e5726d88

MALICIOUS

PDF

45.9 KB Created: 2020-08-31 17:53:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: dd388d530c7ab197f54c261c5ff67123 SHA-1: 3376878a423d3105003ad80c2c687893a13e9e02 SHA-256: b149aef5e5726d88111b2952ad33d42c369dfb7f007c52f516f9966f279708c5

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though partially corrupted, contains text suggesting a 'follow up on request' lure, and a 'download button' heuristic further supports a deceptive workflow. The primary malicious IOC is the redirector URL, which likely leads to further stages of the attack.

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.cc/pify?keyword=follow+up+on+request+email+template
- https://static.usrfiles.com/ugd/93c935_cad32be3c05f4c5ab3baad23d33c7273.pdf
- https://static.usrfiles.com/ugd/409ca8_9dee0467316a438d8ebef2bcd9b0a731.pdf
- https://static.usrfiles.com/ugd/0047a4_9bbf7fe8877842e5a7ed6e8dbcfc0ace.pdf
- https://static.usrfiles.com/ugd/b8c837_65f5a4aa69d9414ab67941a57846e3ee.pdf
- https://cdn.shopify.com/s/files/1/0429/6887/5157/files/gefemunise.pdf
- https://cdn.shopify.com/s/files/1/0435/9503/8877/files/beginners_english_grammar.pdf
- https://cdn.shopify.com/s/files/1/0437/0608/9640/files/auditors_report_format_2019.pdf
- https://static.usrfiles.com/ugd/b8c837_9890c627d50d460396f5bf46ce6f6998.pdf
- https://static.usrfiles.com/ugd/b8c837_0ec3a8206cf54e858aaf867711047b19.pdf
- https://static.usrfiles.com/ugd/696b8a_3caebffb9e584f97a23cfe1fc23126ae.pdf
- https://static.usrfiles.com/ugd/f515ca_aa26be86d9774636a330fd70c807285e.pdf
- https://static.usrfiles.com/ugd/7ea8bb_64cb7f5d5b1e4d0ca5dbcedb5ebe6914.pdf
- https://static.usrfiles.com/ugd/efb3f0_020a86e2bba147289ced9f57f5c40273.pdf
- https://static.usrfiles.com/ugd/5ed537_beb7fab445bc45f6a4d5ecf24b0f1481.pdf
- https://static.usrfiles.com/ugd/b8c837_6a5f2dd4af0e47188c580170f612d5ce.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_off0000751c.bin` `a0900d8f8f0771588e35ccd2004c9f2cdf61a10356b292134297a2226e4ee816`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x751C	5140 bytes
`font_01_sfnt_off0000869a.bin` `92eeed44f112fb77a8f5956f864e897d72e8b40e3fafa47d1917fc945788280c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x869A	10636 bytes

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