PDF malware analysis — malicious · 3fd0331d4d7ea0bd

MALICIOUS

PDF

56.9 KB Created: 2020-09-01 01:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e756a26ced92e713c877fc35e8005b97 SHA-1: f800874f152c4eacf1ae296b2e0755d190bf0a35 SHA-256: 3fd0331d4d7ea0bdd9c990f95049331fb2525ad9b0dccbbf246914363e00e40c

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links, with one critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wix?keyword=guided+reading+level+f+chapter+books, which is flagged as malicious. This suggests the document's primary purpose is to redirect users to a potentially harmful site, likely for phishing or malware distribution.

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://ttraff.ru/wix?keyword=guided+reading+level+f+chapter+books
- https://static.usrfiles.com/ugd/cc03df_864297274dcf48b5b4dd745a7d09df30.pdf
- https://static.usrfiles.com/ugd/4479ed_24bfd8011ebb4234afcdc88de01a9256.pdf
- https://static.usrfiles.com/ugd/b8c837_62918db86f814b9ab2c56ab61585f3c0.pdf
- https://static.usrfiles.com/ugd/a18aa6_6339673ca90944c9a878627c4b08065f.pdf
- https://static.usrfiles.com/ugd/8b9728_74ae9a753bfd4c8ebf0e50eede518d48.pdf
- https://cdn.shopify.com/s/files/1/0431/6325/4944/files/1mdb_audit_report_download.pdf
- https://cdn.shopify.com/s/files/1/0433/9934/8389/files/darelifirov.pdf
- https://cdn.shopify.com/s/files/1/0429/2804/6233/files/74728328285.pdf
- https://cdn.shopify.com/s/files/1/0437/1503/5290/files/convert_to_jpg_linux.pdf
- https://static.usrfiles.com/ugd/99a8f2_e23fc2770a634d17a7a1f11d34eafdcf.pdf
- https://static.usrfiles.com/ugd/b8c837_aa5b7d089cdb4cbb8be8d603ec76784e.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00009166.bin` `1a5279cde8abe2ad95f009114e954cf495d5955a143dbfc306a949e0533b29b9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9166	5596 bytes
`font_01_sfnt_off0000a464.bin` `97225fd4fa457b2828c13f6e20c4afa06f71991fed65b4f451f14a78956fd730`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA464	10896 bytes
`font_02_sfnt_off0000c8de.bin` `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC8DE	4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.