Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d112061ced6f1e3…

MALICIOUS

PDF

37.1 KB Created: 2020-08-25 21:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc3a035ac486da912dc22a0307f68e7a SHA-1: 7996f0aaa47d78e8a79d4748f588dc9d206f50b0 SHA-256: 5d112061ced6f1e35943931a87d3b5b74cd60fc94cb0d2f0a7877b1a9e39bae9
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to `ttraff.com`, which is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain the same URL and a lure related to 'pokemon crystal randomizer'. This suggests the document is designed to trick users into visiting a malicious site.

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.com/pify?keyword=play+pokemon+crystal+randomizer+online
    • http://files.katelyndiane.com/uploads/1/3/1/3/131384635/bumanowor.pdf
    • http://files.rosminicentrewisbech.org/uploads/1/3/0/7/130776594/fenareva.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wofizafadunemewu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8094/9658/files/92937961674.pdf
    • https://cdn.shopify.com/s/files/1/0435/8206/2753/files/command_prompt_codes_list.pdf
    • https://cdn.shopify.com/s/files/1/0441/1306/8184/files/moxovofiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/sujapebazuvojebej.pdf
    • https://cdn.shopify.com/s/files/1/0428/5608/7708/files/92752293751.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/5131800425.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.

FilenameKindSourceSize
font_00_sfnt_off000050e3.bin
5f655716cbde2b42f8949830a30b9f2be9145b17aaea5c88c39a4ba46a783edb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50E3 5436 bytes
font_01_sfnt_off00006354.bin
a66b4611583893eb71deea7de258b79b2e71b8d9a34683985d37197b14b0a772		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6354 10776 bytes

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