Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b07d6c347a1eab…

MALICIOUS

PDF

41.8 KB Created: 2020-08-09 16:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f6fd2c0a59f217d1a845bfbf8c36ac3 SHA-1: 1416981718ba37e9f6411e75895e54d66d047e36 SHA-256: 96b07d6c347a1eab51e36879b81f167748126c64c1ff8ea4992b02b29235969d
150 Risk Score

Malware Insights

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

The PDF contains a large number of links, many of which point to external PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and embedded URLs, further supporting the malicious intent.

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.cc/pify?keyword=sarajevo+haggadah+pdf
    • http://files.numerat.com/uploads/1/3/1/8/131871614/lavaxemagafator_giponu_nopupoki.pdf
    • http://files.gowineusa.com/uploads/1/3/1/0/131070207/f1e1038.pdf
    • http://files.crossculturetoolkit.org/uploads/1/3/1/4/131437515/guvivonizureraxiza.pdf
    • http://files.trailsofhopeandterrorthemovie.com/uploads/1/3/2/6/132695258/8119993.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/lukodawujokoxefisinenam.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/vifizin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23342697578.pdf
    • https://cdn.shopify.com/s/files/1/0432/1892/7775/files/water_pollution_control_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0437/2919/1066/files/banerji_protocol_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/65128166699.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/how_to_uninstall_mysql_mac.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/99335225931.pdf
    • https://cdn.shopify.com/s/files/1/0438/2402/1664/files/sedentarismo_segun_la_oms.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/dumakivawunenidozotovut.pdf
    • https://cdn.shopify.com/s/files/1/0428/3305/1814/files/25406902102.pdf
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/how_to_connect_echo_to_wifi.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_off00006606.bin
b9e1e455fef988d5014cb8fd13852f293baa7da4a7eb0d1f4ca06b00dc419b2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6606 5332 bytes
font_01_sfnt_off00007830.bin
d86b0f881230575dd76d18fb03144a4ea3f2b40cf85ea366018f64817dc63cf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7830 9980 bytes

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