PDF malware analysis — malicious · 2ddb6431c5b085d9

MALICIOUS

PDF

39.2 KB Created: 2020-08-05 03:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a0fe3f674975d131894e0f3d4774390c SHA-1: 4274c047bcf61da61ce0ffa32e9f8d1cbb7f31b0 SHA-256: 2ddb6431c5b085d975165e6576ce49142ceb258db56e3270583e9fcd9c2008fe

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=silas+marner+oxford+bookworms+stage+4+pdf, which is likely intended to lure victims. The presence of numerous links to PDF files on various domains suggests a SEO poisoning or link farm attack pattern.

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=silas+marner+oxford+bookworms+stage+4+pdf
- http://files.coloradorootzmarket.com/uploads/1/3/0/7/130776485/pekuxerifepiz.pdf
- http://files.aventinaromancetravel.com/uploads/1/3/1/0/131070485/8701591.pdf
- http://files.lambdogdoodles.com/uploads/1/3/1/3/131380480/veridopotadofox.pdf
- http://files.joyofbeinghuman.com/uploads/1/3/0/9/130969185/948593.pdf
- http://files.verateschow.ca/uploads/1/3/0/8/130814644/37db46cc6832.pdf
- https://cdn.shopify.com/s/files/1/0436/4809/0270/files/92251350367.pdf
- https://cdn.shopify.com/s/files/1/0433/4672/2965/files/fokosoxoxadew.pdf
- https://cdn.shopify.com/s/files/1/0437/3292/6616/files/sibulatajuviw.pdf
- https://cdn.shopify.com/s/files/1/0431/0574/7095/files/76227250272.pdf
- https://cdn.shopify.com/s/files/1/0436/3101/8142/files/introduction_to_statistics_10th_edition.pdf
- https://cdn.shopify.com/s/files/1/0431/6105/9482/files/ribegibawipejuzerokebuva.pdf
- https://cdn.shopify.com/s/files/1/0434/7405/9430/files/kilipirar.pdf
- https://cdn.shopify.com/s/files/1/0434/5551/2738/files/nenidomenolufononub.pdf
- https://cdn.shopify.com/s/files/1/0437/5193/2056/files/xedavaxojejepudaviv.pdf
- https://cdn.shopify.com/s/files/1/0432/2210/6271/files/capitalisme_d_etat.pdf
- https://cdn.shopify.com/s/files/1/0429/1641/3607/files/sigusolobufumuwu.pdf
- https://cdn.shopify.com/s/files/1/0435/5555/3432/files/pijufefid.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_off0000561f.bin` `0dea09e16d58f69c5dcd3e048c3f2085e8411b0fa4d9478324ea853ea430cc8b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x561F	5916 bytes
`font_01_sfnt_off00006a4c.bin` `3773812dffc2013db369e7169729be269ff5da64b373c74db193b8f466fe0d8d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A4C	11284 bytes

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