PDF malware analysis — malicious · 9f5bd0945177805d

MALICIOUS

PDF

48.1 KB Created: 2020-07-22 14:31:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: af4a1d46f2c96754f6be93a6870cd320 SHA-1: 0ea00050d047955f31a67c343ee0ccee7da39358 SHA-256: 9f5bd0945177805da6ee67d8d14084811ddbbf746b70cc5c33f8a9ca796ce916

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 firing for a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'introduccion punto de equilibrio pdf'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.com/wb?keyword=introduccion%20punto%20de%20equilibrio%20pdf
- http://files.buckscountysingers.org/uploads/1/3/1/8/131856108/juzoz.pdf
- http://files.clayguyry.com/uploads/1/3/1/8/131858540/6359358.pdf
- http://files.mrbrenlea.com/uploads/1/3/1/4/131453837/sikokufediza_mumiguza.pdf
- https://natogobus
- https://cdn.shopify.com/s/files/1/0432/5251/4971/files/79962012556.pdf
- https://cdn.shopify.com/s/files/1/0429/7123/4467/files/wurilizagaw.pdf
- https://cdn.shopify.com/s/files/1/0430/6914/5241/files/8793337200.pdf
- https://jotunajaf.files.wordpress.com/2020/07/xazelawipanidenikifa.pdf
- https://rojapeb.files.wordpress.com/2020/06/81551905625.pdf
- https://natogobus.files.wordpress.com/2020/07/mibovi.pdf
- https://fazagov.files.wordpress.com/2020/06/gusegewolefuviji.pdf
- https://cdn.shopify.com/s/files/1/0436/9884/7894/files/13818633719.pdf
- https://cdn.shopify.com/s/files/1/0435/8035/8811/files/dugurapomevumuvi.pdf
- https://cdn.shopify.com/s/files/1/0435/1708/3803/files/lekuxufu.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87664315042.pdf
- https://cdn.shopify.com/s/files/1/0428/8030/3267/files/43939179540.pdf
- https://cdn.shopify.com/s/files/1/0433/7372/3800/files/pafavalerikituviwesoveve.pdf
- https://cdn.shopify.com/s/files/1/0433/3328/8088/files/vabibapuvusegesusarom.pdf
- https://cdn.shopify.com/s/files/1/0431/0269/9681/files/34461192884.pdf
- https://cdn.shopify.com/s/files/1/0433/4315/1272/files/6538410098.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_off00007e2b.bin` `d5d498a87d346ef27b7d0aa070ff25aabb608f3708136257954c807228cd93a3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E2B	4844 bytes
`font_01_sfnt_off00008ea0.bin` `72f30b14894a6cde0e7131a99587f0c91ab84cbdcd77321736cf43fcc42d35ad`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8EA0	11144 bytes

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