PDF malware analysis — malicious · 0186a5aca180fa7d

MALICIOUS

PDF

73.1 KB Created: 2020-11-21 04:47:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 94062e06563cd61dd70c0e9eca44862b SHA-1: ebd3438c717810d704c9dca8e42faac849248884 SHA-256: 0186a5aca180fa7d07626b73e647191a720bd3ec31fdfeb79c0bb6f4a9495c75

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a high ML score. The embedded URL, 'https://ggtraff.ru/123?utm_term=how+to+make+a+link+in+gmail+app', is identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to 'How to make a link in gmail app', aiming to trick users into clicking the malicious link.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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.
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://ggtraff.ru/123?utm_term=how+to+make+a+link+in+gmail+app
- https://cdn-cms.f-static.net/uploads/4449395/normal_5faaa72f85588.pdf
- https://cdn-cms.f-static.net/uploads/4379744/normal_5f8f03a5b3c86.pdf
- https://cdn-cms.f-static.net/uploads/4457279/normal_5fae698d06955.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/rokuwapesu/gujarati_calendar_november_2019.pdf
- https://s3.amazonaws.com/xamibudasagas/pelajojijujuzebuka.pdf
- https://uploads.strikinglycdn.com/files/c83cca52-5682-406b-9264-cd1444a6a8a0/xuluvunurajadoxa.pdf
- https://uploads.strikinglycdn.com/files/3a9b936d-4b1c-4229-b456-a88014c63dcc/rejevuvugexeva.pdf
- https://uploads.strikinglycdn.com/files/8194fc04-e5ed-4942-b2c6-bcdb03384779/mevilola.pdf
- https://uploads.strikinglycdn.com/files/4265df7c-de66-408b-9992-337769123cb1/warazo.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d45f.bin` `ff584cd2692367b25a501cde30930a84d8f83301d30a80e9cd1feee30ea229e0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD45F	4768 bytes
`font_01_sfnt_off0000e48c.bin` `8188e909a59129a93be79a2138580cbc0f4493164e57aee72372469f6bc38fc7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE48C	11156 bytes
`font_02_sfnt_off000109c8.bin` `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x109C8	4324 bytes

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