PDF malware analysis — malicious · 9073b27a20060330

MALICIOUS

PDF

53.6 KB Created: 2020-08-04 14:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 530a7920cda48ef9c16d81f2ca0564bf SHA-1: 29a83bbf9d2360c3bc55504d2fa790fea684b9a3 SHA-256: 9073b27a20060330c5df5d09c9c5db4ac08b64ec5790056edfc39f680ed3d80b

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.ru). This indicates a link farm designed to obscure the ultimate destination and potentially distribute malware or conduct phishing. The primary malicious URL identified is https://ttraff.ru/pify?keyword=determination+of+acidity+of+water+sample+by+titration+pdf. The document body itself is largely unreadable binary data, but the presence of the malicious redirector is sufficient evidence of malicious intent.

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.ru/pify?keyword=determination+of+acidity+of+water+sample+by+titration+pdf
- http://files.denvermobilehair.com/uploads/1/3/1/4/131409526/4635715.pdf
- http://files.giantpawsgianthearts.com/uploads/1/3/1/4/131437123/6459514.pdf
- http://files.samgolong.com/uploads/1/3/1/4/131437982/1125907.pdf
- http://fameforo.signguides.org/uploads/1/3/1/4/131407901/f2c81.pdf
- http://files.summerslittlebakery.com/uploads/1/3/1/3/131379999/704a23ff53.pdf
- https://cdn.shopify.com/s/files/1/0433/6559/7342/files/fusionner_plusieurs_en_1.pdf
- https://cdn.shopify.com/s/files/1/0429/5265/5002/files/bibafoladarodiluwagekamen.pdf
- https://cdn.shopify.com/s/files/1/0431/8799/4792/files/42229557137.pdf
- https://cdn.shopify.com/s/files/1/0434/9339/2536/files/11586177667.pdf
- https://cdn.shopify.com/s/files/1/0432/8102/3132/files/39030484844.pdf
- https://cdn.shopify.com/s/files/1/0430/8910/0951/files/76054850202.pdf
- https://cdn.shopify.com/s/files/1/0430/7920/5013/files/39224062563.pdf
- https://cdn.shopify.com/s/files/1/0431/7744/3483/files/zoxaresavogex.pdf
- https://cdn.shopify.com/s/files/1/0431/5129/4619/files/38307522934.pdf
- https://cdn.shopify.com/s/files/1/0427/5775/0951/files/99044399208.pdf
- https://cdn.shopify.com/s/files/1/0429/3050/3843/files/26137480803.pdf
- https://cdn.shopify.com/s/files/1/0433/2178/6521/files/4627386377.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_off00008c0f.bin` `ffbd96ab74107a6c7b5f8386ebc6af11bddb2d035fd6b240a367bd6caae59eed`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C0F	5636 bytes
`font_01_sfnt_off00009f3c.bin` `6ddd4cd037a2e494031c2578a2b23882ed835e9d179e07cba0b7358ee17afd31`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F3C	12996 bytes

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