Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f99a44980c2686…

MALICIOUS

PDF

43.2 KB Created: 2020-08-11 05:38:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48c4e1fd1b50934da5afe59535834ea8 SHA-1: c784315b3f5e95f626466c2d1bcc71287e04e1ff SHA-256: d1f99a44980c2686e32ad88db5b1b51ae29abf40021ca582a8552ec0c7650621
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate PDF documents, but the primary link redirects to a malicious domain (ttraff.com). This indicates a phishing or redirection attack aiming to lead the user to malicious content. The document body itself is heavily obfuscated but contains the malicious URL.

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=best+high+school+physics+textbook+pdf
    • http://files.daisychainkinsale.com/uploads/1/3/2/6/132683014/11d3004c43282.pdf
    • http://files.propowerwashingllc.com/uploads/1/3/0/7/130775786/majuvanifatud.pdf
    • http://rowububu.benyoungerman.com/uploads/1/3/1/4/131438641/zavonebunufizate.pdf
    • http://files.highplainsgunstocks.com/uploads/1/3/0/7/130739525/2164183.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/86715106578.pdf
    • https://cdn.shopify.com/s/files/1/0434/8120/2854/files/94191521907.pdf
    • https://cdn.shopify.com/s/files/1/0432/3128/1312/files/girewiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3387/7914/files/25215310850.pdf
    • https://cdn.shopify.com/s/files/1/0436/2479/2224/files/wukuwaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/3830482313.pdf
    • https://cdn.shopify.com/s/files/1/0434/1835/3815/files/dewujawunaperapazupoxutu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67257536452.pdf
    • https://cdn.shopify.com/s/files/1/0434/8290/6789/files/66902326039.pdf
    • https://cdn.shopify.com/s/files/1/0435/2317/8656/files/bailey_love_s_short_practice_of_surgery_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/labur.pdf
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/23431731330.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_off00006a95.bin
bd22147e50b1fb4685326101cd5c45e884e141aede0075545ca2ff027416c1f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A95 5536 bytes
font_01_sfnt_off00007d72.bin
ac2a98b7f074c6f89e82b0094e4064b16ddb471249e9bc68a74f99159cc4de8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D72 10040 bytes

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