PDF malware analysis — malicious · b63f5559b04225a7

MALICIOUS

PDF

57.3 KB Created: 2020-08-07 10:03:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 033b057f8af81c8163662a22c43e1482 SHA-1: 8c1791316281018159cfc728eda1304b22341a55 SHA-256: b63f5559b04225a7d7d57b60e27bf8ed0a6ca33ae3cb731f73e6bf417249e212

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This indicates an attempt to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm tactic to obscure the malicious redirector.

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/pify?keyword=anglophone+literature+pdf
- http://files.literaryhumboldt.org/uploads/1/3/2/8/132815054/sijigirenaxofug.pdf
- http://files.kulitjerukbali.net/uploads/1/3/0/7/130738955/1448541.pdf
- http://files.philanthropy1.com/uploads/1/3/1/3/131379213/6513eb1e.pdf
- https://cdn.shopify.com/s/files/1/0432/1869/8400/files/freund_mathematical_statistics.pdf
- https://cdn.shopify.com/s/files/1/0431/3609/0267/files/20773999444.pdf
- https://cdn.shopify.com/s/files/1/0428/4848/5535/files/29823806864.pdf
- https://cdn.shopify.com/s/files/1/0432/9524/4452/files/automata_theory_download.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdf
- https://cdn.shopify.com/s/files/1/0428/5366/2883/files/lukudopon.pdf
- https://cdn.shopify.com/s/files/1/0437/6743/1320/files/70257564954.pdf
- https://cdn.shopify.com/s/files/1/0437/8922/2037/files/88412801260.pdf
- https://cdn.shopify.com/s/files/1/0427/6181/4172/files/95319764588.pdf
- https://cdn.shopify.com/s/files/1/0431/9268/0611/files/balazuwubaf.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60561448525.pdf
- https://cdn.shopify.com/s/files/1/0430/5554/6517/files/jisogeluvanebavarezekukod.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nakawefefaf.pdf
- https://cdn.shopify.com/s/files/1/0430/2385/9873/files/sibiwuras.pdf
- https://cdn.shopify.com/s/files/1/0428/5107/4214/files/xewonomugetegozokavux.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_off0000a4a2.bin` `44e3553444470dfe3f3831f71c9195b3079e57c3f7662c97092b914193e8e872`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA4A2	5116 bytes
`font_01_sfnt_off0000b605.bin` `1545f0dd837ad6b1b64a659fd1eed5565e78563969a54386aeb516d4e2d99835`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB605	9944 bytes

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