PDF malware analysis — malicious · 4bee77162a17a9bc

MALICIOUS

PDF

39.3 KB Created: 2020-07-30 17:36:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7d68ccae30a68d295deab612252f83ed SHA-1: 223d0dafe5447849c4115c6a38c75e88ae70b362 SHA-256: 4bee77162a17a9bccecbf7f20336af033cb5c16abfdbcfc3447d7fba720202bb

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous external links, a technique often used to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is disguised with a keyword search for "cebuano bible pdf". The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs. The presence of a link farm and a malicious redirector strongly suggests an attempt to lead the user to a compromised or malicious resource.

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.cc/pify?keyword=cebuano+bible+pdf
- http://files.wybntv14.com/uploads/1/3/1/4/131438557/fafijoludime.pdf
- http://files.slfexhibition.com/uploads/1/3/2/6/132682022/mimadumevote.pdf
- http://files.delorenzotimes.org/uploads/1/3/0/7/130775200/pomamaruwolipiv-zorepiviv.pdf
- https://cdn.shopify.com/s/files/1/0434/3015/0309/files/54121631371.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pizejop.pdf
- https://cdn.shopify.com/s/files/1/0433/0048/7332/files/93198479745.pdf
- https://cdn.shopify.com/s/files/1/0428/9436/0743/files/gajadipuzimeg.pdf
- https://cdn.shopify.com/s/files/1/0434/0521/3854/files/76729946959.pdf
- https://cdn.shopify.com/s/files/1/0434/8359/4917/files/kekasuweguzexazowimamujav.pdf
- https://cdn.shopify.com/s/files/1/0431/0692/6741/files/38938960253.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fawalonilon.pdf
- https://cdn.shopify.com/s/files/1/0428/9203/4211/files/31357796468.pdf
- https://cdn.shopify.com/s/files/1/0427/4470/9276/files/zuvaterojemenitovikog.pdf
- https://cdn.shopify.com/s/files/1/0432/7525/5972/files/40406763311.pdf
- https://cdn.shopify.com/s/files/1/0431/4578/9600/files/49932260303.pdf
- https://cdn.shopify.com/s/files/1/0431/1557/7504/files/livim.pdf
- https://cdn.shopify.com/s/files/1/0435/4434/6792/files/jepuvejake.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/
- https://cdn.shopify.com/s/files/1/043

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005d63.bin` `43968a93635233dd25ea8a2c6ed2de909f7d1b6bb464686c9748262b7d075f00`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D63	4728 bytes
`font_01_sfnt_off00006d79.bin` `63af51dd3713a7a7cb8f6691f75afdea9c1cc8071d0815a73256db7c46d903e5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D79	10200 bytes

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