PDF malware analysis — malicious · 19fb1504568e1672

MALICIOUS

PDF

50.5 KB Created: 2020-08-05 23:27:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c3122838f63d76af287a1c2a9ab03274 SHA-1: 0f1caf12a2adc1e41474768f8ec9bd6fa4212728 SHA-256: 19fb1504568e1672786040f62b14ccca077997ec66d502a4c22364b00b29fedb

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. The primary link, 'https://ttraff.ru/pify?keyword=java+programming+language+book+pdf+download', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the same lure and URL, reinforcing the malicious intent. The file's structure and link farm suggest a phishing or malware distribution attempt.

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.ru/pify?keyword=java+programming+language+book+pdf+download
- http://files.careersatadviceone.com/uploads/1/3/1/6/131637136/a6bc63bde.pdf
- http://files.lynniashanley.com/uploads/1/3/1/0/131070098/1454330.pdf
- http://files.developingamerica.org/uploads/1/3/0/8/130874329/9849548.pdf
- https://cdn.shopify.com/s/files/1/0429/8126/1466/files/vuxomufagatafuruseroge.pdf
- https://cdn.shopify.com/s/files/1/0432/7296/2203/files/12426063586.pdf
- https://cdn.shopify.com/s/files/1/0430/8280/9508/files/28773936627.pdf
- https://cdn.shopify.com/s/files/1/0428/7509/3159/files/27132915943.pdf
- https://cdn.shopify.com/s/files/1/0432/0909/7384/files/jibekasediruwojim.pdf
- https://cdn.shopify.com/s/files/1/0431/1020/3545/files/budokodidezikup.pdf
- https://cdn.shopify.com/s/files/1/0433/1234/9334/files/12920899113.pdf
- https://cdn.shopify.com/s/files/1/0430/8572/5857/files/zugekizusata.pdf
- https://cdn.shopify.com/s/files/1/0430/1098/2041/files/peavey_bandit_112_manual.pdf
- https://cdn.shopify.com/s/files/1/0430/1206/3391/files/44562529978.pdf
- https://cdn.shopify.com/s/files/1/0437/3744/8609/files/botuvebimipuradiwadixuxo.pdf
- https://cdn.shopify.com/s/files/1/0428/5536/6822/files/sonic_rpg_ep_10.pdf
- https://cdn.shopify.com/s/files/1/0428/5048/4390/files/13912978392.pdf
- https://cdn.shopify.com/s/files/1/0448/6466/7810/files/applications_of_right_triangle_trigonometry_worksheet.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_off00008523.bin` `5b8c64ed2e30236493344df977cbdd4499b9b849c5c525127d74f316549a1c66`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8523	5528 bytes
`font_01_sfnt_off000097f8.bin` `fdd1663cbc5b84c133a2a1ca361bedaf9a553e22a6ad67e788a882a00d9fbe9a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x97F8	10316 bytes

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