PDF malware analysis — malicious · dc57957c29627066

MALICIOUS

PDF

45.3 KB Created: 2020-07-29 05:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3e98240be26a395b9b29d27df4e8d234 SHA-1: fff8bd35af669331c269d0f34bc4072dbb5d2aa5 SHA-256: dc57957c2962706663346616b986340a3edd41f5450d31b6688e2194cfe6c252

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, a technique often used for SEO link farms. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the ultimate destination for malicious payloads. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of numerous external links indicates a social engineering attempt to direct users to 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.com/pify?keyword=flipped+math+algebra+1+answer+key
- http://files.boldedscience.com/uploads/1/3/0/8/130814534/wipufonadepifot.pdf
- http://files.3smallplatescatering.com/uploads/1/3/0/9/130969418/1887825.pdf
- http://files.wooddragonadvising.org/uploads/1/3/2/6/132681062/1373169.pdf
- http://files.theordernj.com/uploads/1/3/1/4/131454521/964805.pdf
- http://files.wooddragonadvising.org/uploads/1/3/2/6/132681062/1
- https://cdn.shopify.com/s/files/1/0432/4173/4312/files/vipisajif.pdf
- https://cdn.shopify.com/s/files/1/0429/5468/6620/files/nigetolopobofo.pdf
- https://cdn.shopify.com/s/files/1/0435/5247/3252/files/tediko.pdf
- https://cdn.shopify.com/s/files/1/0428/4085/0598/files/52553211172.pdf
- https://cdn.shopify.com/s/files/1/0432/9383/5432/files/duwesux.pdf
- https://cdn.shopify.com/s/files/1/0428/4196/4710/files/64419304433.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdf
- https://cdn.shopify.com/s/files/1/0434/0993/2440/files/23314726333.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69262577592.pdf
- https://cdn.shopify.com/s/files/1/0431/4651/0504/files/wepuvegemetarebotav.pdf
- https://cdn.shopify.com/s/files/1/0435/3510/6203/files/kigafoxavonosiwupegidogaw.pdf
- https://cdn.shopify.com/s/files/1/0437/1028/3931/files/bepubebewade.pdf
- https://cdn.shopify.com/s/files/1/0430/4388/1114/files/dimogasirive.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_off0000739d.bin` `630ec8a4d7a7a85f986a0f76a516b6a28f5c34956caf2920b85e0df8061ed0db`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x739D	5456 bytes
`font_01_sfnt_off0000860d.bin` `6afcc353ea99f7dc69daa1af744a9c81e847c736db9e16f9b524cb2bc3908504`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x860D	9928 bytes

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