Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd62d887253e12b0…

MALICIOUS

PDF

40.9 KB Created: 2020-08-29 17:30:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dac02e52ef51f0cf35eb059df206ea86 SHA-1: c374fb0098ce15c0aa991c79ce55cc28166991cb SHA-256: fd62d887253e12b0816417f066117c4efa7a545b7ab53303714648b5ed1b8bfb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, including a critical redirector link to 'ttraff.cc', disguised with keywords related to 'Pokemon dark rising 2 gba apk'. This indicates a likely phishing or malware distribution attempt. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.cc/wix?keyword=pokemon+dark+rising+2+gba+apk
    • https://static.usrfiles.com/ugd/b8c837_345162eb8cd841059827dcb328f2ac6c.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a61f382fadb41dc8f59c2b5e9716213.pdf
    • https://static.usrfiles.com/ugd/b8c837_a204aadcb32040fea2a3631dabc818db.pdf
    • https://static.usrfiles.com/ugd/b8c837_e5cd7b02488f4d298ef00202ec2908f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_b98bb2402670435e9064fa46bdc5ad28.pdf
    • https://static.usrfiles.com/ugd/b8c837_b66af327c13643228fe2a10cfe26f05c.pdf
    • https://static.usrfiles.com/ugd/b8c837_5eec4bbe028b4a24be489570cf5eb964.pdf
    • https://cdn.shopify.com/s/files/1/0428/5317/1356/files/98172170573.pdf
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/mupexedawugegor.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/mukefexamaniza.pdf
    • https://cdn.shopify.com/s/files/1/0428/6650/7943/files/38009231743.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ff9.bin
148d80c030d36185d3bcb17bb9ea6d92ab6821dea8bda53731f5c3dfc3c7201a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF9 5584 bytes
font_01_sfnt_off000072db.bin
e83afce968f38fb58d6b0aa1180a95f7e8263ad0d3fe6f76243969fbaa037d95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72DB 10684 bytes

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