PDF malware analysis — malicious · 2c265db328332a75

MALICIOUS

PDF

51.4 KB Created: 2020-07-21 09:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fe6b965d9b0c0cb25f5d50c4df0c3e09 SHA-1: a48971dcd07de205ff5223fd7a803f0a3070f65f SHA-256: 2c265db328332a7581a184e3ff68c93200643710803e0ff176588d50c5a7358e

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'obstructive jaundice' and mentions 'wkhtmltopdf', indicating it's likely a crafted document. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content.

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/wb?keyword=obstructive%20jaundice%20adalah%20pdf
- http://files.brisbaneartclasses.com/uploads/1/3/0/8/130874210/dd9d11863f2e.pdf
- http://files.cfdebate.com/uploads/1/3/2/7/132741764/miwumigugiramimoxod.pdf
- http://files.thanehouse.com/uploads/1/3/0/7/130775977/tubowefono.pdf
- http://files.garvinhunter.com/uploads/1/3/1/6/131637853/jejoxaruguluz_durul_nodujizivabo.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ziwodukujaluladiludu.pdf
- https://cdn.shopify.com/s/files/1/0430/7854/9665/files/21020748462.pdf
- https://cdn.shopify.com/s/files/1/0430/8582/4154/files/laduzizuv.pdf
- https://cdn.shopify.com/s/files/1/0430/5040/1943/files/fevemevekunokowigulesab.pdf
- https://cdn.shopify.com/s/files/1/0432/4684/6107/files/37788683996.pdf
- https://xivuwor.files.wordpress.com/2020/06/29518772777.pdf
- https://mutebiduv.files.wordpress.com/2020/07/96342896698.pdf
- https://guzedaf.files.wordpress.com/2020/07/35735427353.pdf
- https://sepuliw.files.wordpress.com/2020/07/napiz.pdf
- https://cdn.shopify.com/s/files/1/0428/1312/8863/files/vojeke.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdf
- https://cdn.shopify.com/s/files/1/0430/6275/5490/files/63473612277.pdf
- https://cdn.shopify.com/s/files/1/0430/7278/2489/files/wokogirekorepibevir.pdf
- https://cdn.shopify.com/s/files/1/0428/2253/3276/files/zutevijawugimudexedetu.pdf
- https://cdn.shopify.com/s/files/1/0434/5040/0928/files/welav.pdf
- https://cdn.shopify.com/s/files/1/0431/5178/6135/files/69472129643.pdf
- https://cdn.shopify.com/s/files/1/0430/7881/1797/files/94707920009.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_off00008c06.bin` `582f5a4e8673aced7815352c7bb912e91d43cb202f3e850677ffcb9a758205c8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C06	5320 bytes
`font_01_sfnt_off00009e11.bin` `4f964890ea06540dfb305081b21ec946458a69018f9a8c92968daf346097d1df`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9E11	9844 bytes

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