PDF malware analysis — malicious · 3a4bff507d70f4a1

MALICIOUS

PDF

50.9 KB Created: 2020-08-31 02:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: abe9c650474b73a6f13dff2ef6f49962 SHA-1: db81a5904814d04e380670b30eaa375265f65447 SHA-256: 3a4bff507d70f4a1aed7a1b5b6d097acf0bcb3f5a3753ec2ccfde5371a38dca5

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is ttraff.com, which is used in conjunction with a keyword related to 'optifine xray'. The document body, though heavily obfuscated, also contains this URL and numerous other Shopify URLs, suggesting a link farm strategy. The ML classifier also strongly indicated maliciousness.

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/wix?keyword=1.14+optifine+xray
- https://cdn.shopify.com/s/files/1/0435/1308/6106/files/autoformation_windev_mobile_20.pdf
- https://cdn.shopify.com/s/files/1/0427/5906/1670/files/a_clockwork_orange_slang_guide.pdf
- https://cdn.shopify.com/s/files/1/0438/1776/2973/files/gibbons_creek_resevoir.pdf
- https://cdn.shopify.com/s/files/1/0435/2134/3647/files/vimizefumelolilag.pdf
- https://static.usrfiles.com/ugd/4f270c_dc9a17fd991e4dbca6bfa8a5d9a45231.pdf
- https://static.usrfiles.com/ugd/b8c837_cd2312a66bca4ca287641161d6b601fd.pdf
- https://static.usrfiles.com/ugd/b8c837_de65114771cc4a4da31b3019933ad817.pdf
- https://static.usrfiles.com/ugd/97368a_523a6230cd554eeea017a0d75b889a30.pdf
- https://static.usrfiles.com/ugd/fb83f1_f190bfdb526b4f7faf5bcec841c29319.pdf
- https://cdn.shopify.com/s/files/1/0429/3420/6631/files/rukobefosulunikabetazot.pdf
- https://cdn.shopify.com/s/files/1/0430/3486/9909/files/1799900128.pdf
- https://cdn.shopify.com/s/files/1/0435/9825/0146/files/78795325143.pdf
- https://cdn.shopify.com/s/files/1/0434/5312/0664/files/nidusezozi.pdf
- https://cdn.shopify.com/s/files/1/0430/0183/9775/files/51811492636.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006559.bin` `17bd0acab4cf98f696665e5f0b22927e809ed287356dda95036491b7ff2f273f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6559	4720 bytes
`font_01_sfnt_off0000757a.bin` `91498ff7105b5ab4cc2816e320d9d8024069a47af92e43941137d018aa6595dc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x757A	10932 bytes
`font_02_sfnt_off00009a6f.bin` `f7fb55aa7df24da556f1e6a14ff3e973b5c7274e6851c040e899454d18355684`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A6F	16064 bytes
`font_03_sfnt_off0000af03.bin` `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAF03	4324 bytes

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