PDF malware analysis — malicious · acde9b464828c38c

MALICIOUS

PDF

120.3 KB Created: 2020-09-01 04:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 990ce4724044be458ef0e082c854e959 SHA-1: 9eb1a3ed924aca3b850174ee7b6139aac3222a4f SHA-256: acde9b464828c38c5da6bd6cb1c7350d2a2371812a17f9dbc6910183e15ff0fe

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains the same URL and keywords related to a 'baldi horror game', suggesting a lure to attract victims. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm techniques used to improve search engine ranking for malicious content.

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.cc/wix?keyword=baldi+horror+game
- https://cdn.shopify.com/s/files/1/0435/1908/2655/files/betepitexunulod.pdf
- https://cdn.shopify.com/s/files/1/0438/1740/2530/files/environmental_impact_assessment_checklist_template.pdf
- https://cdn.shopify.com/s/files/1/0435/0879/3510/files/gopitolalu.pdf
- https://cdn.shopify.com/s/files/1/0433/8178/4734/files/25887028872.pdf
- https://cdn.shopify.com/s/files/1/0428/3600/0931/files/kibeli.pdf
- https://cdn.shopify.com/s/files/1/0435/5565/1743/files/8461985804.pdf
- https://cdn.shopify.com/s/files/1/0435/9448/1821/files/rifezigexisodoto.pdf
- https://cdn.shopify.com/s/files/1/0428/4504/4892/files/lojagabejurigod.pdf
- https://cdn.shopify.com/s/files/1/0441/2728/9496/files/61298914508.pdf
- https://cdn.shopify.com/s/files/1/0435/7645/9422/files/daxelowo.pdf
- https://cdn.shopify.com/s/files/1/0434/1068/6113/files/antivirus_para_android_online.pdf
- https://static.usrfiles.com/ugd/4f270c_4a4018faeb234a60a5707630d3980f82.pdf
- https://static.usrfiles.com/ugd/96768c_563078c876434acf9e4344c2c1a6b2fb.pdf
- https://static.usrfiles.com/ugd/24853a_d78cc2fb14474857b6e825b7b14f848b.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0001719e.bin` `f53ee54a3c0b6f15901bf92abd148a1989ba290041f1799d38c0372a7581ac37`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1719E	3436 bytes
`font_01_sfnt_off00017deb.bin` `cfad831006f373a03b1dfd12d92e215556fe1d8fcb4f07e622ca63c341f35e41`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x17DEB	5108 bytes
`font_02_sfnt_off00018f1d.bin` `20da8d33713b4354dba5e133b20ad435790992ff76c0db90bac7f0c1407370c1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x18F1D	24944 bytes

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