PDF malware analysis — malicious · d5c7999737d2ad20

MALICIOUS

PDF

42.3 KB Created: 2020-10-31 09:12:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c0e15766a6e9936b2cd00d2dd19194ac SHA-1: 9ffc31ac07ded13908f79ebbbf998049f74e9756 SHA-256: d5c7999737d2ad20504dbae8346e21e6f99f0aef0717af3c62f1beb4002780e3

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a link farm designed to manipulate search engine results. One of these links, https://gettraff.ru/strik?keyword=the+spiritual+journey+of+alejandro+jodorowsky, is identified as a malicious redirector. The presence of numerous links and the identified malicious redirector strongly suggest a phishing or malicious redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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://gettraff.ru/strik?keyword=the+spiritual+journey+of+alejandro+jodorowsky
- https://cdn-cms.f-static.net/uploads/4384633/normal_5f9d08d2ab6f5.pdf
- https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/4295916.pdf
- https://wibugosavuzatug.weebly.com/uploads/1/3/4/3/134349607/9552449.pdf
- https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/panemunefufam.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0428/5952/8355/files/takuruwivilujit.pdf
- https://cdn.shopify.com/s/files/1/0437/0307/4984/files/34803399796.pdf
- https://cdn.shopify.com/s/files/1/0496/7248/7076/files/xorebimodajazijujem.pdf
- https://cdn.shopify.com/s/files/1/0437/1516/6357/files/kidde_nighthawk_carbon_monoxide_alarm_manual_kn-cob-dp-ls.pdf
- https://cdn.shopify.com/s/files/1/0502/6303/1957/files/diphthongs_worksheets_4th_grade.pdf
- https://cdn.shopify.com/s/files/1/0496/1406/1731/files/rituals_of_memory_kimberly_blaeser.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000063cc.bin` `7892ed182112ae1cc1308d21c7738866a175cf930353b424a74e5df2ce80dac5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63CC	5412 bytes
`font_01_sfnt_off0000764c.bin` `28465ccf65aa234c193a0f30bbf2e5aabfda0453063456c24db36a43238c5ae2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x764C	11892 bytes

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