PDF malware analysis — malicious · 417b49e0e5b84a7b

MALICIOUS

PDF

40.5 KB Created: 2020-08-12 05:03:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a0878d500d3243fcbde497713154458a SHA-1: 0a5c114b0fc42f3500fb79af5c4274c7d50acd23 SHA-256: 417b49e0e5b84a7b7e408564b964f9dcf615d36c5f995d0d005c8096834c1862

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. The primary link, 'https://ttraff.ru/wb?keyword=converter%20pdf%20em%20powerpoint%20gratis%20smallpdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to PDF conversion, reinforcing the lure. The ML classifier strongly flagged this PDF as malicious.

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/wb?keyword=converter%20pdf%20em%20powerpoint%20gratis%20smallpdf
- http://rojofori.lindsayblooms.com/uploads/1/3/1/0/131069934/jupetozexija.pdf
- http://zetedu.bronpi-uk.com/uploads/1/3/0/7/130739783/06323b25c7aa42.pdf
- http://files.gracechristianvisalia.org/uploads/1/3/0/8/130874128/7b6abad2a.pdf
- http://files.lumibella.ca/uploads/1/3/0/7/130739916/e8e702e63a53930.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdf
- https://cdn.shopify.com/s/files/1/0438/5678/9664/files/94971227462.pdf
- https://cdn.shopify.com/s/files/1/0440/4976/0406/files/48680185475.pdf
- https://cdn.shopify.com/s/files/1/0433/8765/0211/files/47342867868.pdf
- https://cdn.shopify.com/s/files/1/0439/2307/9323/files/five_metaphysical_poets.pdf
- https://cdn.shopify.com/s/files/1/0430/4296/3613/files/greek_and_roman_mythology_stories.pdf
- https://cdn.shopify.com/s/files/1/0430/7959/8229/files/vuvinedojun.pdf
- https://cdn.shopify.com/s/files/1/0438/1668/1629/files/26113620438.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bisadugizutojaririxenudep.pdf
- https://cdn.shopify.com/s/files/1/0437/4459/2021/files/lifolatozabipobegawam.pdf
- https://cdn.shopify.com/s/files/1/0429/0668/1497/files/sajezufum.pdf
- https://cdn.shopify.com/s/files/1/0448/2279/0305/files/cavalleria_rusticana_piano.pdf
- https://cdn.shopify.com/s/files/1/0431/0263/4148/files/68774797603.pdf
- https://cdn.shopify.com/s/files/1/0436/8872/2597/files/14131981561.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_off00005f2e.bin` `240d3a1d00e9edc60d5e5ca34e9298ecdd685b5765cb7f02c65ad881bdbd7d1c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F2E	5420 bytes
`font_01_sfnt_off0000719c.bin` `38a8eb3751959701dfbf44ea54a451dc80651a1b7008d74857e1bb19e405711f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x719C	10284 bytes

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