Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ae91a73ba72572…

MALICIOUS

PDF

39.1 KB Created: 2020-08-24 16:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b28f818fe27de4e03826fdab9ca9312c SHA-1: 5d168dc639583d26ac2ef8520d707c2b443f9227 SHA-256: 96ae91a73ba7257231950517f7d56d55bead924645cfebd8847d215f4632c553
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious due to embedded links pointing to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=vegetasi+yang+menyusun+formasi+barringtonia+adalah. The document body contains obfuscated text and references to wkhtmltopdf, suggesting it was generated programmatically to host these links. No scripts were extracted, but the presence of the malicious redirector strongly indicates a phishing or malware delivery attempt.

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.
  • 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.
  • 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/pify?keyword=vegetasi+yang+menyusun+formasi+barringtonia+adalah
    • http://sozulekuk.ignaciovaldes.net/uploads/1/3/2/7/132740405/25567ab6d.pdf
    • https://cdn.shopify.com/s/files/1/0432/3983/3755/files/fundamentals_of_power_electronics_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/4233/3087/files/27548176907.pdf
    • https://cdn.shopify.com/s/files/1/0432/7365/0334/files/righteousness_of_god.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1670/files/online_calendar_template_march_2019.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/27327672482.pdf
    • https://cdn.shopify.com/s/files/1/0435/7003/6904/files/wemudakesojewusopodoxape.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/98895710636.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/arris_modem_sb6190_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4560/files/71453010192.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_off00005959.bin
5dc91b0f0da1b8f6761af4cb9adccb5932570e9f1dcff6877092ca0e2651e503		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5959 5528 bytes
font_01_sfnt_off00006bf7.bin
8a91fa16ca5041003bade1eeba3355ace66300da9cb7aef938f667ebe4e85e7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF7 9940 bytes

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