Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f6dc27f2ed1d7bf…

MALICIOUS

PDF

39.4 KB Created: 2020-08-23 15:58:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ab74827900d59033df06c8f193deaf2 SHA-1: 655ea4c94fa192811f036dd97971f9d467dd31d6 SHA-256: 9f6dc27f2ed1d7bf1e37588a679018909d87f1b1154bcea8ed6ace11366128fd
140 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as a form to fill. The document body, though heavily obfuscated, contains this URL and other links to PDF files hosted on Shopify. The presence of a callback lure heuristic further suggests a phishing or scam attempt. The primary attack pattern involves tricking the user into clicking the malicious link under the guise of completing a form.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=fill+anti+ragging+form+rgpv
    • http://files.onsighteyecare.co.uk/uploads/1/3/0/7/130739287/fafubu.pdf
    • http://woken.wisemountainyoga.com/uploads/1/3/0/9/130969060/5036316.pdf
    • https://cdn.shopify.com/s/files/1/0433/1916/5086/files/tojipunoruwosujulolo.pdf
    • https://cdn.shopify.com/s/files/1/0438/1949/9682/files/vineme.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nipexaledova.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/88396948761.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4500/files/9928182109.pdf
    • https://cdn.shopify.com/s/files/1/0432/8371/0117/files/xodasuda.pdf
    • https://cdn.shopify.com/s/files/1/0438/3621/1362/files/35829094104.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefiwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5611/files/69917290581.pdf
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/sawexolabajubejo.pdf
    • https://cdn.shopify.com/s/files/1/0439/4788/4699/files/3419040099.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/13510265912.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_off00004db4.bin
b3e1b2fc31688b8b359215b27174848cb60da4798d3211597dff5fe9fe70b568		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DB4 5060 bytes
font_01_sfnt_off00005edf.bin
9ec1f1af62bb3c147e24ed32f63cc3f65470d35ac3614c83feab436a58fad666		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EDF 15740 bytes

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