PDF malware analysis — malicious · 3d52da533adc86ac

MALICIOUS

PDF

49.6 KB Created: 2020-07-28 20:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a27097067568f58138d98bf6e091b602 SHA-1: 604edc1832772317951185cf83b6f54fcf641a21 SHA-256: 3d52da533adc86ac86c43b21871144d958396aa6f8424722df93e7082f94329f

150 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being a redirector. The document body, though heavily obfuscated, contains text related to 'Crystal reports 2016' and 'wkhtmltopdf', suggesting a lure to disguise the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=crystal+reports+2016+case+statement+multiple+values
- http://files.canbuildimmigration.com/uploads/1/3/1/1/131163736/jasit_zafajig_konaburawuw_pulale.pdf
- http://files.plainfieldgirlscouts.org/uploads/1/3/1/4/131407138/0ef27f38437.pdf
- http://files.jennylohswhitework.com/uploads/1/3/0/8/130874647/d0e955316652066.pdf
- http://files.prestonfreshersweek.com/uploads/1/3/0/8/130813837/328360.pdf
- http://files.prestonfreshersweek.com/uploads/1/3/0/8/130813837/328360
- https://cdn.shopify.com/s/files/1/0437/5294/7873/files/83905432676.pdf
- https://cdn.shopify.com/s/files/1/0432/0729/5140/files/41545141810.pdf
- https://cdn.shopify.com/s/files/1/0432/6309/9040/files/doporetazogoxojuruk.pdf
- https://cdn.shopify.com/s/files/1/0431/4556/0219/files/93620748989.pdf
- https://cdn.shopify.com/s/files/1/0437/4387/1127/files/befutejaf.pdf
- https://cdn.shopify.com/s/files/1/0433/4118/5189/files/78279863200.pdf
- https://cdn.shopify.com/s/files/1/0435/7039/7339/files/gegavurafagam.pdf
- https://cdn.shopify.com/s/files/1/0439/6548/1118/files/63843592105.pdf
- https://cdn.shopify.com/s/files/1/0431/2681/6932/files/36529675947.pdf
- https://cdn.shopify.com/s/files/1/0437/0078/1208/files/17890839040.pdf
- https://cdn.shopify.com/s/files/1/0432/6948/8798/files/94349079065.pdf
- https://cdn.shopify.com/s/files/1/0430/6999/7207/files/62711873821.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_off00007f92.bin` `608ea0d94da4e95d3e3f13ef8622c5a5a5e28e09e40db740a325d21325795ecc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F92	5628 bytes
`font_01_sfnt_off000092ad.bin` `7ac7b99cd52540f19e2abdbc54c22e5ba32eb5d562062ac8de81fb3a6002bc79`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x92AD	10768 bytes

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