PDF malware analysis — malicious · 9eb332f46e1d517b

MALICIOUS

PDF

44.2 KB Created: 2020-11-05 18:24:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a72dde3487c2bf735a87aefa06b7327c SHA-1: 74bcb9d0a290916da076b64fd122a6ccd4b01092 SHA-256: 9eb332f46e1d517bad830715e2d980b45ef2d781a8693a730681bd84285cd711

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'https://cctraff.ru/123?keyword=i+wish+you+the+best+book'. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the redirector suggest an attempt to lure the user to a malicious site, 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://cctraff.ru/123?keyword=i+wish+you+the+best+book
- https://cdn-cms.f-static.net/uploads/4370052/normal_5f90fffd30d72.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0481/6014/5559/files/davonujuragukubazitut.pdf
- https://s3.amazonaws.com/bededuxotulapil/xofedirorilan.pdf
- https://uploads.strikinglycdn.com/files/b03b8b09-3ce6-4cd6-b7a5-b3294cb8582d/kofimelabadovawigopode.pdf
- https://uploads.strikinglycdn.com/files/ad17a9e8-2763-414e-b72a-c5c1663d792b/kemavigijef.pdf
- https://uploads.strikinglycdn.com/files/80117483-4e66-44a6-a729-f3b2fa83ebd2/dragon_ball_z_dokkan_battle_hack_apk_android.pdf
- https://s3.amazonaws.com/satedafadusizo/cr2o3_ionic_compound_name.pdf
- https://s3.amazonaws.com/jedobufudajewu/81267717170.pdf
- https://s3.amazonaws.com/rufonali/reading_worksheets_for_beginners.pdf
- https://uploads.strikinglycdn.com/files/e46091ea-3e33-4c0c-8d39-5ff77d69cf85/japibulum.pdf
- https://uploads.strikinglycdn.com/files/7949827d-33fc-419d-9d15-5545da7a4eb1/66123155733.pdf
- https://uploads.strikinglycdn.com/files/084284a7-9bf4-4f59-9362-66188b6671f5/17048479074.pdf
- https://uploads.strikinglycdn.com/files/bb74dc0f-7f7d-4ce6-abc6-459191e34f32/36904407240.pdf
- https://cdn.shopify.com/s/files/1/0266/7669/1125/files/models_mass_communication_research.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_off0000702b.bin` `1b8d2b1a61c6e2173f810ae0c3fc1b16166bc808e2ee3a965ff74944647654ca`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x702B	4772 bytes
`font_01_sfnt_off00008080.bin` `be0d8840c541d14278baa7c18bbc2946191d5a45bfb154ba89450d8d069437a5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8080	10716 bytes

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