Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd83599bd5b2c38…

MALICIOUS

PDF

67.2 KB Created: 2020-08-03 05:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 452a93c84aed93a61ebd4f46c7a362f9 SHA-1: a127dcf9c3b7c423bc517314a488f62c0e1ee0e3 SHA-256: 7dd83599bd5b2c38a3e2eaeda7360ac008a2e1a198866cf84fba9727d1929981
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm designed to attract traffic or distribute malicious content. The primary malicious IOC is the redirector URL, which likely leads to a phishing or malware download page.

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=compact+disc+receiver
    • http://files.kitchen2boardroom.com/uploads/1/3/0/7/130739517/penira.pdf
    • http://files.cchc-inc.com/uploads/1/3/2/8/132816087/toxufojevomibab-pamuzugojanefa-pivufifaxa.pdf
    • http://files.haussonas.com/uploads/1/3/1/4/131407635/dosetepa.pdf
    • http://files.keepafallenstar.com/uploads/1/3/0/9/130969889/6385142.pdf
    • http://files.musimaciay.com/uploads/1/3/1/4/131437249/fofivabemupujop.pdf
    • https://cdn.shopify.com/s/files/1/0434/8923/1014/files/34647458960.pdf
    • https://cdn.shopify.com/s/files/1/0441/0333/6088/files/ligapavumuwol.pdf
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/74924800761.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/zemofedabelatized.pdf
    • https://cdn.shopify.com/s/files/1/0435/5869/9159/files/how_to_make_teamspeak_server.pdf
    • https://cdn.shopify.com/s/files/1/0432/2564/5224/files/38305836924.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7405/files/7880948776.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/refazutimare.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fakuwonilojovaxibudebu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3175/6957/files/john_deere_790_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/5529/0270/files/rammstein_amerika_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/7556/7777/files/ziguluwufupi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4098/0643/files/intex_pool_pump_manual.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_off0000cab5.bin
5022a2277f86003eec62dc959bac366ed9109f8b31db7b7380340a93fc488a94		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB5 5152 bytes
font_01_sfnt_off0000dc20.bin
00f2c1eb65b8ebf44695ac504570bd3f6c09474d48a2e78b17883a6513241140		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC20 10524 bytes

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