PDF malware analysis — malicious · a79ce9b000b935ab

MALICIOUS

PDF

42.4 KB Created: 2020-11-01 17:06:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 199740023f7b00071b211a9f0f778867 SHA-1: 15bd92b09215a0a86fdb79f31294b00007d123af SHA-256: a79ce9b000b935ab6ebdc3bc7d123167d42c68f11fef1af1c93a0d5c550f5462

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL `https://ttraff.me/123?keyword=saratoga+swimming+club` is the primary indicator of malicious intent. While no scripts were explicitly extracted, the nature of the PDF and the malicious link suggest it is designed to lure users to a harmful destination, likely for phishing or malware delivery.

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.
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://ttraff.me/123?keyword=saratoga+swimming+club
- https://cdn-cms.f-static.net/uploads/4365657/normal_5f8d40f2cd31b.pdf
- https://cdn-cms.f-static.net/uploads/4368952/normal_5f905bc34ba82.pdf
- https://cdn-cms.f-static.net/uploads/4380699/normal_5f8b2f3cbe072.pdf
- https://cdn-cms.f-static.net/uploads/4365598/normal_5f8823b1c7ffe.pdf
- https://cdn-cms.f-static.net/uploads/4377403/normal_5f8f15df0d748.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/7386e61c-1041-48cd-99a5-49ee2be59a7e/law_legislation_and_liberty.pdf
- https://s3.amazonaws.com/vokeri/juvitumukafabijedige.pdf
- https://uploads.strikinglycdn.com/files/15065548-5442-429e-a4e9-2667c70367d0/givazike.pdf
- https://s3.amazonaws.com/laradusa/123movies_apk_android.pdf
- https://s3.amazonaws.com/fasanag/50364768639.pdf
- https://s3.amazonaws.com/bagisi/45312553153.pdf
- https://uploads.strikinglycdn.com/files/db3b8d6a-c97a-40ab-bbab-d1749a60fa6c/puvomi.pdf
- https://uploads.strikinglycdn.com/files/b57a86ee-b279-48e8-ba90-383ae7ab8635/parallel_perpendicular_worksheet.pdf
- https://uploads.strikinglycdn.com/files/0be88097-6c81-4bce-bf1f-401c43a07b14/wejiludut.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_off0000647b.bin` `f18f861f834061087fe168d9e50dd785bd7edd8ee3c0058eed3911c1fb1fb125`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x647B	5452 bytes
`font_01_sfnt_off00007703.bin` `c30bd3d2835b5a5d5de48a2675f69502951adfdee3b74c3537cc6ffd9d2768c2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7703	11100 bytes

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