Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9f0d65a95cab0c8…

MALICIOUS

PDF

45.7 KB Created: 2020-08-11 13:39:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99de6f27dd951b03bce8bc3427aa8520 SHA-1: 7166ed7cc1447cf1449cac893b726666c849d559 SHA-256: f9f0d65a95cab0c872da3427675d745b6b045527af0f5b43cc38f1b37ab35d77
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a legitimate document, but it redirects to a malicious URL. The primary malicious link identified is https://ttraff.com/pify?keyword=business+development+executive+responsibilities+pdf, which is part of a known redirector infrastructure. The document body, though heavily obfuscated, contains this URL and other links to Shopify-hosted PDFs, suggesting a phishing or social engineering lure.

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.com/pify?keyword=business+development+executive+responsibilities+pdf
    • http://files.boydfilm.com/uploads/1/3/1/4/131483235/499f561916368a5.pdf
    • http://files.milamk8.org/uploads/1/3/0/7/130740258/f3ca000e78c15.pdf
    • http://files.azvrha.com/uploads/1/3/1/4/131453268/5754771.pdf
    • http://dawik.embryyo.com/uploads/1/3/0/9/130969858/witajesikaxewe.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8178/files/54107140658.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9426/files/5731743351.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
    • https://cdn.shopify.com/s/files/1/0431/9281/1669/files/gabelubutujejuwotenen.pdf
    • https://cdn.shopify.com/s/files/1/0431/8887/9521/files/94667051870.pdf
    • https://cdn.shopify.com/s/files/1/0434/1599/4529/files/podozit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6143/5813/files/jekivotawezakoma.pdf
    • https://cdn.shopify.com/s/files/1/0437/1139/8039/files/jobojenebuser.pdf
    • https://cdn.shopify.com/s/files/1/0432/7555/0873/files/ccrn_practice_questions.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006604.bin
e18c17a36fe09ccd61a2446ca7d42f43ccb4363991e38f92521034d278bb0a49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6604 5292 bytes
font_01_sfnt_off000077e8.bin
6d3305e6edaa4e8b9fc47205d03477b78a93409ab81470617bbed983ba35e60f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77E8 10412 bytes
font_02_sfnt_off00009b80.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B80 4324 bytes

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