Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d7ceb433f506c7a…

MALICIOUS

PDF

34.6 KB Created: 2020-08-30 20:38:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e1cabc924e9e239b4f4711561a4be04 SHA-1: 203d10766b8f04cfd0f81f60b2130cac156c3cbd SHA-256: 7d7ceb433f506c7a97e92ed261f151e4357fdff788a922fc40ddad6bc9acf434
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL. This suggests the PDF is designed to trick users into clicking the link, leading them to a malicious site for phishing or malware delivery.

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/wix?keyword=do+you+hear+what+i+hear+sheet+music+piano
    • https://cdn.shopify.com/s/files/1/0446/7916/8153/files/canon_in_d_ukulele.pdf
    • https://cdn.shopify.com/s/files/1/0431/7501/8662/files/autumn_leaves_jazz_piano_solo_improvisation.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7270/files/guwejejixavo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/35699171005.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/41353509319.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/ansi_c_programming_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/2656/2722/files/3841914053.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/wejopimabagadegef.pdf
    • https://cdn.shopify.com/s/files/1/0431/0981/0343/files/gubafuzekesagugozaz.pdf
    • https://cdn.shopify.com/s/files/1/0459/1658/6133/files/one_piece_bounty_rush_apk_obb_revdl.pdf
    • https://static.usrfiles.com/ugd/b8c837_139045fa44014a24ac06e59f8c364058.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ec284379e554faf84c97e216abefd89.pdf
    • https://static.usrfiles.com/ugd/74c34a_4ed98a37bca3462dbe3bdb2b5ff2225f.pdf
    • https://static.usrfiles.com/ugd/b8c837_21299698ec9846c19e961adc3ac3e058.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_9932266eb03b4deaa42f0d28c9bb53bc.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_off00004956.bin
7c65a1356035d81124774fcdc17f8de4fb9ed1c2bfd6c7c3caa06324d294de66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4956 5332 bytes
font_01_sfnt_off00005b74.bin
a0e9052afffc9d533ac7a98d05c20411bd7155d1c4acc166b4ea3ae8d7fa1907		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B74 9884 bytes

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