Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf787c062658747…

MALICIOUS

PDF

33.9 KB Created: 2020-08-23 02:44:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c196d5fd7a776c78d05222ee73aa1b6 SHA-1: 7aaf71023ed86fde2230c67534ccdcdc4677023d SHA-256: ccf787c062658747f6c6fb6c258cb23da37de3411c013c290e5db47ae73469a8
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.com/pify?keyword=yamaleela+2+audio+songs+free'. Another critical heuristic identified a PDF link farm hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute malicious content. The document body, though heavily obfuscated, contains text related to 'Yamaleela 2 audio songs free' and the authoring application 'wkhtmltopdf', likely serving as a lure to encourage clicks on the malicious links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=yamaleela+2+audio+songs+free
    • http://xoduler.libertytechcharter.org/uploads/1/3/1/4/131483152/5a99507b.pdf
    • http://files.anchorfloral.com/uploads/1/3/2/6/132695365/kosiru_loxeporasu_sunija_vobuzitikesi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7486/2758/files/54042821145.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5502/files/24738954110.pdf
    • https://cdn.shopify.com/s/files/1/0465/1188/2398/files/answer_back_disrespectfully_crossword.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/rukuzik.pdf
    • https://cdn.shopify.com/s/files/1/0437/0182/9797/files/19584938941.pdf
    • https://cdn.shopify.com/s/files/1/0429/2512/9894/files/biwunatop.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/bimepe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/jokuwoxisubazifexe.pdf
    • https://cdn.shopify.com/s/files/1/0437/5481/5640/files/rawipiko.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_off00004603.bin
eac12eb6f0359274e60dcc9eb253349487e43dab3535d73a3ab4fe59a63a8892		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4603 5320 bytes
font_01_sfnt_off00005802.bin
7633aa2b315f76565f4ca655ac55a0a4da27bdbe1f124c5e9776940ac0a1a601		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5802 9844 bytes

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