Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc19854a87e4ecd…

MALICIOUS

PDF

47.1 KB Created: 2020-08-20 05:51:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53d1d7df99088e6d9a3cadc656b4dd3b SHA-1: 4f74d81b6d9f852097940b9cebcb97d6cfdd85a3 SHA-256: 9cc19854a87e4ecd04e8612e2c7de941f9f056be9d2e94a6b6a0b2f084ab96fa
120 Risk Score

Malware Insights

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

The PDF document contains a lure related to a "dissertation structure guide" and embeds a large number of links. One of these links, https://ttraff.com/pify?keyword=dissertation+structure+guide, points to a known malicious redirector. The document also contains numerous links to external PDFs hosted on various domains, suggesting a link farm or redirection strategy. 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.com/pify?keyword=dissertation+structure+guide
    • http://files.strathmoreapts.com/uploads/1/3/0/8/130815026/zawijofirazel-pikizerizixok.pdf
    • http://sobitipo.knockatallonns.com/uploads/1/3/1/3/131384260/1e36ea7b828.pdf
    • http://files.fkumc.net/uploads/1/3/1/1/131164312/gorifijekezewojum.pdf
    • https://cdn.shopify.com/s/files/1/0432/6146/0644/files/modded_cookie_clicker_save.pdf
    • https://cdn.shopify.com/s/files/1/0437/5868/2273/files/89759352524.pdf
    • https://cdn.shopify.com/s/files/1/0434/1796/0600/files/7246100896.pdf
    • https://cdn.shopify.com/s/files/1/0431/6214/0826/files/20940737202.pdf
    • https://cdn.shopify.com/s/files/1/0431/4831/2736/files/78004837365.pdf
    • https://cdn.shopify.com/s/files/1/0432/6857/1294/files/rigidez_articular_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/migoxanegetotar.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/arithmetic_mathematics.pdf
    • https://cdn.shopify.com/s/files/1/0436/0346/0259/files/33661553479.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dc4.bin
527fdb434cdc375fc2571a6c515a46437230f0d21b222c1820052095648eed46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC4 4956 bytes
font_01_sfnt_off00007ea4.bin
f4fded649f9dee4f9b9bd69a4d24ca124409dc42a8e1d72ad8fa24e7ba7a5923		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA4 10240 bytes
font_02_sfnt_off0000a1b1.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1B1 4324 bytes

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