Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e9340d4dfa49bdf…

MALICIOUS

PDF

39.0 KB Created: 2020-08-02 19:44:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b145b3f1621ed07e856b89ac33205807 SHA-1: b59562e5f49fb778c38bd95b6aee7be6a70d94e0 SHA-256: 7e9340d4dfa49bdf0bcb5ba180789576f43e830e8a8e92670e7613fe759afe14
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious due to a critical heuristic firing for a redirector link to 'https://ttraff.cc/pify?keyword=synonyms+for+oversee'. Additionally, it contains a large number of external links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning attempt. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

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=synonyms+for+oversee
    • http://files.atangleroutfitters.com/uploads/1/3/0/7/130739718/tokasoxobikos_mejet_wiwup_wulolisadileso.pdf
    • http://files.upinsmokemb.com/uploads/1/3/1/1/131164272/3920162.pdf
    • http://files.eslboom.com/uploads/1/3/1/1/131163492/ffac5150.pdf
    • http://files.heart-tokushima.com/uploads/1/3/1/1/131164350/93816.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/latezub.pdf
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/puzodoludexavalo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5806/8633/files/82626703215.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90675932679.pdf
    • https://cdn.shopify.com/s/files/1/0434/1009/6284/files/guxuwav.pdf
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/kunupaxibagirefopo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/gekedasaparana.pdf
    • https://cdn.shopify.com/s/files/1/0430/9535/9637/files/43797818125.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/rixupimuwudosilugera.pdf
    • https://cdn.shopify.com/s/files/1/0433/6690/8063/files/kenojenif.pdf
    • https://cdn.shopify.com/s/files/1/0427/8291/6767/files/95459975286.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/65467607275.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_off000059e0.bin
c5337b24b13447008c28a988bcb308dcf337ffea39b636c5587a7492d07130a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59E0 4936 bytes
font_01_sfnt_off00006aa9.bin
eeb849c04dd64b00f0d8caa9b308e624b4a58afdc9abadb45426f45e4420a284		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA9 10688 bytes

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