Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d6fa37b795e887f…

MALICIOUS

PDF

35.6 KB Created: 2020-08-21 20:46:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5caab73b2a4e5e660946286566619706 SHA-1: dea78eb3f9df8651f283098e71b3b5910041fc87 SHA-256: 8d6fa37b795e887f5a57c9cd6c12873cfb1f5d5267df50020f6ca61381083cb7
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, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=little+monster+royal+blood+drum+sheet+music', is designed to redirect the user to malicious infrastructure. The document also contains a large number of embedded links, many pointing to Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the true destination. The primary intent appears to be luring the user to a malicious site via a deceptive 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.cc/pify?keyword=little+monster+royal+blood+drum+sheet+music
    • http://files.monashsoccerclub.com/uploads/1/3/0/9/130969206/a1a40a.pdf
    • https://cdn.shopify.com/s/files/1/0431/1033/4620/files/fbr_amnesty_scheme_2018_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/misipukunimizakinolobiwun.pdf
    • https://cdn.shopify.com/s/files/1/0434/3198/5309/files/45051710760.pdf
    • https://cdn.shopify.com/s/files/1/0437/6766/0693/files/voxiw.pdf
    • https://cdn.shopify.com/s/files/1/0436/3304/9753/files/cable_and_deadpool_comic.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/58538898098.pdf
    • https://cdn.shopify.com/s/files/1/0429/9227/1519/files/mujepulebu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/best_to_word_converter_online_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/lajipinijemu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6200/files/child_support_agreement_letter.pdf
    • https://cdn.shopify.com/s/files/1/0440/4684/4054/files/mabevuwogowale.pdf
    • https://cdn.shopify.com/s/files/1/0448/0273/6279/files/adverbs_of_manner_exercises_2_eso.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_off00004805.bin
0338cea924cabfea03bd69abcd9c1a86cbd702d237601b0e819ad91c66d19e76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4805 5364 bytes
font_01_sfnt_off00005a11.bin
7f4788756584aa3b0758d079abc2572612daa7c1a01ac9c08cf74c7e430e2092		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A11 12416 bytes

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