Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc448b70687860c…

MALICIOUS

PDF

39.6 KB Created: 2020-08-04 04:15:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a518422906af7c6d2091a28915025ca SHA-1: e298eeba3c7a381108575f486a47262e55863410 SHA-256: 9fc448b70687860c7db690ba5758023dd25bd866eb8e770e615d2ec35964ce62
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one identified as a malicious redirector. The presence of a 'download button' heuristic further suggests a lure to trick the user into clicking the malicious link. The primary malicious URL identified is https://ttraff.ru/pify?keyword=jadual+caruman+perkeso+pdf, which likely leads to further malicious content. No scripts were extracted from this sample.

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.ru/pify?keyword=jadual+caruman+perkeso+pdf
    • http://files.whatmrdrehersaid.net/uploads/1/3/1/3/131381422/9657136.pdf
    • http://files.mwpto.org/uploads/1/3/0/8/130813821/nizokixa.pdf
    • http://files.annaengels.com/uploads/1/3/0/9/130969061/4767265.pdf
    • https://cdn.shopify.com/s/files/1/0434/5918/2745/files/tuwev.pdf
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/chemeketa_simnet_online.pdf
    • https://cdn.shopify.com/s/files/1/0429/9610/5375/files/92968055854.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/calculus_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/fixug.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/77705182925.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/22517862206.pdf
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/fegavo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4607/5542/files/46658309229.pdf
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/18079916756.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_off00005d78.bin
ec884484e94d87191efe2ba8bfab102ee9b66633745df67e0aa4d46d9f1f42c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D78 5356 bytes
font_01_sfnt_off00006f9b.bin
248b75447daa2f00040dfe16874f9cd7946e14ae6a5d440c43391b827c06dde1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9B 10128 bytes

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