Malicious PDF — malware analysis report

Static analysis result for SHA-256 529ba94320056409…

MALICIOUS

PDF

36.9 KB Created: 2020-08-22 12:05:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a54107429c655c7904d667b4cad4986 SHA-1: db9f1d135ad3d12c2a8dc1d8f7e4f77dc4f8bb76 SHA-256: 529ba943200564092749b42f7db32ebd48bf8f4b7b3e0fe6d4d1546f7e01946e
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO manipulation. One critical heuristic identified a direct link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=bloodsport+theme+song+ringtone+free', which is presented as a lure for free ringtones. This indicates a social engineering tactic to drive traffic to malicious sites.

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.cc/pify?keyword=bloodsport+theme+song+ringtone+free
    • http://files.organicbakies.com/uploads/1/3/0/9/130969632/rusot.pdf
    • https://cdn.shopify.com/s/files/1/0439/9919/9390/files/luvujazebakogone.pdf
    • https://cdn.shopify.com/s/files/1/0433/6300/8661/files/towarokinozelezinufuka.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/41961024813.pdf
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/dexiwimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5371/9452/files/27106798494.pdf
    • https://cdn.shopify.com/s/files/1/0432/5802/0000/files/43687916541.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8902/files/free_printable_reading_comprehension_worksheets_7th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0436/4127/4521/files/html_prevent_autofill.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/99748845866.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2156/files/pekejobubavisaravedow.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3144/files/46644250018.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_off00005058.bin
93cc585d60e419017ffb6c9be1d61a492774beb416f5bf31fac358a5e7bf8faf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5058 5292 bytes
font_01_sfnt_off0000623e.bin
836764247f5c49c7e0079872b29aa2b6524449f229f466b3382a8dac75c58a50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623E 11300 bytes

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