Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac5de14cb9fa1d0…

MALICIOUS

PDF

41.0 KB Created: 2020-08-23 09:52:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54572dcadd1b6283fa2c6fbce66c4308 SHA-1: 77978c1634ea47d963674a507f61de12da353ee6 SHA-256: 9ac5de14cb9fa1d0d5234a55ff1738e6b77abd616e7ec58fbc6a0ea42bdbd86e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though partially corrupted, includes the text 'Rpa uipath certification questions and answers' and a URL that matches the redirector. This suggests a phishing attempt using a lure related to RPA certification to entice users to click the malicious link.

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=rpa+uipath+certification+questions+and+answers
    • http://files.cyannesze.com/uploads/1/3/1/3/131384173/8578732.pdf
    • http://files.kathrynfree.com/uploads/1/3/0/9/130969700/083a3897.pdf
    • https://cdn.shopify.com/s/files/1/0434/4306/0901/files/58190964635.pdf
    • https://cdn.shopify.com/s/files/1/0428/6165/8279/files/77157186977.pdf
    • https://cdn.shopify.com/s/files/1/0433/3155/1400/files/zemakibonenikud.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/rezaredajap.pdf
    • https://cdn.shopify.com/s/files/1/0431/6119/0554/files/schrodinger_s_cat_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/type_de_carrosserie_automobile.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jibivugutujul.pdf
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/dulenexibelaf.pdf
    • https://cdn.shopify.com/s/files/1/0440/2210/4222/files/gidaviloxiriwaxexajopadar.pdf
    • https://cdn.shopify.com/s/files/1/0432/3675/3570/files/gisubavunupute.pdf
    • https://cdn.shopify.com/s/files/1/0431/9313/9357/files/xududolasemoloza.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_off000062d4.bin
fb647b4476c6618d6f526dfa6ad4b6dad92ff1f9344470a35661bcda518175aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62D4 5436 bytes
font_01_sfnt_off00007560.bin
3f4245a96fc3b57912d86ea1b20c6cf50014506945f0559b4bfd68f0f8cf84d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7560 10020 bytes

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