Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb3c95ec6628c6bf…

MALICIOUS

PDF

42.4 KB Created: 2020-08-22 21:09:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bfb4d18825d79631f18c0329937b102 SHA-1: fc112cf32d89a26cad90e848e1732acff70ad8a3 SHA-256: cb3c95ec6628c6bfc8ff9ab0c6175a5a0c7f0be2a1c19b8778c17dfc4e750a83
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.com, with a query parameter suggesting a lure for 'hacking guide kali linux'. The document body, though heavily obfuscated, also contains this URL and numerous other links pointing to Shopify domains, likely part of a link farm to improve search engine ranking for malicious content. The primary attack pattern involves tricking the user into clicking the malicious redirector 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.com/pify?keyword=hacking+guide+kali+linux
    • http://zirov.austin-brady.com/uploads/1/3/1/4/131437657/zokatemokovim.pdf
    • http://vufud.kmid.com.au/uploads/1/3/1/6/131606156/2150784.pdf
    • https://cdn.shopify.com/s/files/1/0440/4648/3606/files/zepodew.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/46471082918.pdf
    • https://cdn.shopify.com/s/files/1/0428/9377/0919/files/rosetta_stone_japanese_bittorrent.pdf
    • https://cdn.shopify.com/s/files/1/0429/9839/9139/files/rosaguvigugotiwukan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/76781912234.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/d_d_way_of_the_long_death.pdf
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/boxowite.pdf
    • https://cdn.shopify.com/s/files/1/0433/7352/7203/files/tumereseluk.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/30459025870.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/gugasesisa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6119/files/59453996335.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5792/files/verb_form_of_choose.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_off000067ff.bin
0c1d8d8a8ba5f2d9d24c74f47aad21756133601f718052bb1ef7949945547471		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67FF 4924 bytes
font_01_sfnt_off000078d1.bin
84ed57f1b48beef66354abd3c4b1dc7d33ebcdf6ca436a03ddb0afddd967dea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D1 10600 bytes

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