Malicious PDF — malware analysis report

Static analysis result for SHA-256 a57f4b6d11ae7806…

MALICIOUS

PDF

40.9 KB Created: 2020-08-28 23:04:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74e47ff305244ec609281ec63db4a42d SHA-1: ffe517fa4e0c89044134c992ab32cf7200d998f2 SHA-256: a57f4b6d11ae780692fda6eee5a7a2fa4c38b62fba7439e7e6a402f1e7aee85b
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for distributing malicious content. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/wix?keyword=penn+320+gti+drag+specs'. This suggests the document's primary purpose is to lure users to this malicious site, likely for further exploitation or malware delivery. The presence of a large number of external PDF links also indicates a link farm strategy.

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/wix?keyword=penn+320+gti+drag+specs
    • https://static.usrfiles.com/ugd/b8c837_d83fa47f809d49b995d078fd06782ada.pdf
    • https://static.usrfiles.com/ugd/b8c837_38d614b8dec34dcc881415fb9c583ce8.pdf
    • https://static.usrfiles.com/ugd/b8c837_1cf55a1e12b049beaef37598af8b68c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_efd06bd06baf434aa44f185218b28860.pdf
    • https://cdn.shopify.com/s/files/1/0436/1833/6925/files/kpmg_email_address_format_uk.pdf
    • https://cdn.shopify.com/s/files/1/0438/8729/6680/files/sakebevelak.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3639/files/dikasifuregazumi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6453/2900/files/yasin_full.pdf
    • https://cdn.shopify.com/s/files/1/0434/3041/2454/files/45248622030.pdf
    • https://cdn.shopify.com/s/files/1/0428/9062/5191/files/gorumapojoradixifi.pdf
    • https://static.usrfiles.com/ugd/b8c837_26450e6b92e34791a8b4ded296ad509b.pdf
    • https://static.usrfiles.com/ugd/b8c837_6488a0cfe728435b831603c2fb947484.pdf
    • https://static.usrfiles.com/ugd/b8c837_76bac145d3f942f5895190352fac18c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc438509ef674caf95ed813883331695.pdf
    • https://static.usrfiles.com/ugd/b8c837_e268caaef2da41fcadac0c154334b4f2.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_off00005fd8.bin
c3b55b1e978b8b477e2d52364c08b1d8f91443f1a76446124c454ed731ffe47b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD8 5648 bytes
font_01_sfnt_off00007312.bin
f9347abbb4460e47526bd69a4302b81fc1b88347e2cc1d26f21836f5d53f622f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7312 10524 bytes

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