Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5c39a5383e8c77a…

MALICIOUS

PDF

67.8 KB Created: 2020-09-01 14:52:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5306ae97d26f404909d0bc26bfa9aed3 SHA-1: c409dc09a318a801bcdf959bf1049998748b8f3a SHA-256: a5c39a5383e8c77a2847027dcbe9bb21341e2ca494eee83309d099197a08c8cb
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=beta+ios+13++link'. This URL is presented within the document body, suggesting a phishing or scam attempt to direct users to potentially harmful content. The file also exhibits characteristics of a link farm, with numerous embedded URLs, though most resolve to benign content. 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.me/wix?keyword=beta+ios+13++link
    • https://static.usrfiles.com/ugd/b8c837_853327562298494eaa99db4a50b10a37.pdf
    • https://static.usrfiles.com/ugd/516574_6889b3153a40411ea40c30f87167d546.pdf
    • https://static.usrfiles.com/ugd/01bc73_aaafc0ea5401467ab671de1d986a547a.pdf
    • https://static.usrfiles.com/ugd/b8c837_67869d0b1a424653b7b6877be0e9f2df.pdf
    • https://cdn.shopify.com/s/files/1/0437/9400/6177/files/fabiganukob.pdf
    • https://cdn.shopify.com/s/files/1/0439/8641/9870/files/zoselekijijaloro.pdf
    • https://cdn.shopify.com/s/files/1/0429/1382/4927/files/libro_automatismos_industriales_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0429/2316/3801/files/82601590157.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/93341640396.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/23578474604.pdf
    • https://cdn.shopify.com/s/files/1/0437/2434/1400/files/12594035513.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_off0000bcbe.bin
63ddd4e1d342ef7a9704597e7394e20da701fa4a4a982d250f70a0ffb190a0c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCBE 4912 bytes
font_01_sfnt_off0000cd91.bin
05bd9a87fd9e051bd53a7a6c58c506162b093967b20e4370935e8eacf3711fd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD91 19152 bytes

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