PDF malware analysis — malicious · 7ae7fa998dea4b28

MALICIOUS

PDF

75.3 KB Created: 2020-11-24 03:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5d31318c044450979a152fbd38943931 SHA-1: d62fbc6376f1ffce63cc38e6be29365e8e6a4424 SHA-256: 7ae7fa998dea4b28046ffb80c08d2128cec2fd9489ad50bd36048f5bdfaaf7f9

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with a high probability of being malicious. The embedded URL, https://cctraff.ru/123?utm_term=guide+to+fishing+lotro, is the primary indicator of malicious intent, suggesting a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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://cctraff.ru/123?utm_term=guide+to+fishing+lotro
- https://cdn-cms.f-static.net/uploads/4367674/normal_5f90372f523aa.pdf
- https://gozisali.weebly.com/uploads/1/3/4/6/134670052/zotosapejo-sumonevepudu.pdf
- https://cdn-cms.f-static.net/uploads/4450511/normal_5fa8f2c510836.pdf
- https://labuxodapiju.weebly.com/uploads/1/3/4/4/134492440/789432.pdf
- https://cdn-cms.f-static.net/uploads/4379233/normal_5f9c8d455413e.pdf
- http://www.opentle.org
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/1d211f39-3f42-4b8a-9721-81e9a94886f1/79584128765.pdf
- https://uploads.strikinglycdn.com/files/ec864c29-32d7-4047-b162-3346fb58166f/razipajakiw.pdf
- https://s3.amazonaws.com/xupizewuxere/sobetefabodikazonagasowo.pdf
- https://uploads.strikinglycdn.com/files/40c0987b-be9f-4410-974b-32efa4161935/regular_expression_odd_length.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://www.gnu.org/licenses/gpl.html
- http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off0000d513.bin` `b63ae686871f5ae5367ce42879e815bc9d18711247af4263943f2c391fbf6a32`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xD513	14980 bytes
`font_00_sfnt_off0000c42b.bin` `55651bb3af7b1d59af22b0fea1fc0b8f2660f00a4bc673497ec574503f10ff2f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC42B	4988 bytes
`font_02_sfnt_off0000fdfe.bin` `5a45b6d6961b0e89b95a349d45b4611137030bd1c3adf6bb03191c698e3de02c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFDFE	10100 bytes

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