Malicious PDF — malware analysis report

Static analysis result for SHA-256 52b0f40a25f4afff…

MALICIOUS

PDF

41.3 KB Created: 2020-08-14 20:27:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7386fc73786ad282487a8b2cae4c834b SHA-1: b6d5734a59b231aaac05a6b21290decf034811cb SHA-256: 52b0f40a25f4afff81d3aab9faea1d665b306f019aceeca971a764492e4cd17c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is likely used to funnel victims to a phishing page or malware download. The document also contains a PDF link farm heuristic, indicating a large number of outbound links, many of which are hosted on Shopify but ultimately lead to the malicious redirector. No scripts were extracted from this sample.

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.ru/pify?keyword=apple+phone+ringtone++zedge
    • http://files.americanrootsuk.com/uploads/1/3/2/8/132814900/5052726.pdf
    • https://cdn.shopify.com/s/files/1/0430/7353/6149/files/70738026100.pdf
    • https://cdn.shopify.com/s/files/1/0437/6464/6042/files/46330331363.pdf
    • https://cdn.shopify.com/s/files/1/0446/9293/0716/files/sociolinguistic_theory_chambers.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/free_screen_recorder_no_root.pdf
    • https://cdn.shopify.com/s/files/1/0437/6661/2130/files/19259485985.pdf
    • https://cdn.shopify.com/s/files/1/0434/4233/9992/files/23928171442.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/add_text_to_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7870/3518/files/alg2_antragsbegrndung.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1152/files/badulifaba.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/bejuwepujizafunaxanisugo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9007/6057/files/38505402778.pdf
    • https://cdn.shopify.com/s/files/1/0429/3958/0575/files/makalah_titrasi_argentometri.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_off00006562.bin
9e013ca53b77bdf46014e5874b3fb2ac6765b76edd4a4059e69bdfa0d56d0617		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6562 4872 bytes
font_01_sfnt_off000075f4.bin
2c39733721439a10f9d5017816ed1cc333a49da3bb2ecdd110f9ebe4f22f0d7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F4 10256 bytes

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