Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17d5e4de328436e…

MALICIOUS

PDF

39.9 KB Created: 2020-09-01 15:38:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a09dd444a7cdbbec9df17002084457b0 SHA-1: 1ef99f899adcdc8e2e5347433019d5ca13ee8c1f SHA-256: c17d5e4de328436e5061003865ccc437a7708375239e1972e06c105c6e3630a2
150 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.me', which is associated with the lure 'free bootleg movies'. The document also contains a PDF link farm heuristic, indicating a large number of embedded links, many of which point to Shopify domains. The primary malicious URL is 'https://ttraff.me/wix?keyword=free++bootleg+movies', which is likely used to redirect the user to a malicious payload or phishing site.

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.me/wix?keyword=free++bootleg+movies
    • https://cdn.shopify.com/s/files/1/0428/6690/1148/files/mubilam.pdf
    • https://cdn.shopify.com/s/files/1/0430/8336/6551/files/free_autumn_word_search.pdf
    • https://cdn.shopify.com/s/files/1/0439/0774/3899/files/16278091652.pdf
    • https://cdn.shopify.com/s/files/1/0432/4563/3693/files/probability_math_examples.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61066914906.pdf
    • https://cdn.shopify.com/s/files/1/0430/1930/5113/files/advanced_custom_fields_repeater.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/64312687182.pdf
    • https://cdn.shopify.com/s/files/1/0438/5128/4642/files/crisis_on_infinite_earths.pdf
    • https://cdn.shopify.com/s/files/1/0433/1808/3742/files/clinical_pharmacy_and_therapeutics_herfindal.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/44565701096.pdf
    • https://cdn.shopify.com/s/files/1/0429/0707/4719/files/daughter_of_invention_reading_check_answers.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_off00005fb4.bin
eea89d57cc1bada07dbe7a316950adab23259e0e280b1468297efe5c431c1131		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB4 4948 bytes
font_01_sfnt_off00007084.bin
0bd6220bc03c5686193e28958435c4ecc0a37ae008e8c292064192e07c587be0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7084 10252 bytes

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