PDF malware analysis — malicious · 4279603252088888

MALICIOUS

PDF

44.1 KB Created: 2020-07-31 01:34:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3dd4adbda9a7d646c852734a37ead28e SHA-1: 47a091f27dee927ca9a34feb0aa85e4fd5fa6278 SHA-256: 42796032520888886e0ccfcfb43d3ed88b56ff36a6bca98082f6330c52fa7154

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains multiple heuristics indicating malicious intent, specifically linking to a known malicious redirector and employing a link farm strategy. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create deceptive documents. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download.

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=hbs+case+book+filetype+pdf
- http://files.geoffgoodsonhorsemanship.com/uploads/1/3/1/6/131607010/fd34d85184.pdf
- http://files.aikenkraft.com/uploads/1/3/1/3/131397971/tagiduxoxam-bukedikato.pdf
- http://files.vandalsgames.com/uploads/1/3/0/7/130738614/zerari.pdf
- https://cdn.shopify.com/s/files/1/0431/1675/7153/files/nowanirisuzenewejev.pdf
- https://cdn.shopify.com/s/files/1/0433/1952/5534/files/30026343406.pdf
- https://cdn.shopify.com/s/files/1/0428/6388/6495/files/71152768859.pdf
- https://cdn.shopify.com/s/files/1/0436/6408/1046/files/86627530364.pdf
- https://cdn.shopify.com/s/files/1/0435/5702/8001/files/xovenama.pdf
- https://cdn.shopify.com/s/files/1/0435/2756/9576/files/pizugamufepiwefetigi.pdf
- https://cdn.shopify.com/s/files/1/0434/9650/5496/files/keroworipedos.pdf
- https://cdn.shopify.com/s/files/1/0431/6915/3181/files/gedefapisoxilixafojuzosiz.pdf
- https://cdn.shopify.com/s/files/1/0432/8990/3259/files/bazoviloxomiguxitezide.pdf
- https://cdn.shopify.com/s/files/1/0429/7929/5383/files/8740435294.pdf
- https://cdn.shopify.com/s/files/1/0431/1344/7584/files/95971220543.pdf
- https://cdn.shopify.com/s/files/1/0430/6678/5949/files/zevukagosozufidodoj.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_off00007051.bin` `d5ce66f64ee776dd52cd8b92a8546c05064712f3e43fab88afb8b51b132c8d5b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7051	5000 bytes
`font_01_sfnt_off0000815a.bin` `bd7fe983c4c0219abee8708fb9ba5148892cfd74f0d97cb60913ef566ae242ac`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x815A	9988 bytes

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