Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9364b647170816a…

MALICIOUS

PDF

44.3 KB Created: 2020-09-08 18:02:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00b68e1b239d257c1f30635e20eace4b SHA-1: 7503bbed2a26ddfa8bfeb70c95688bdced7baf87 SHA-256: c9364b647170816a06daae50958744356a583ec16915f6cbb2773060933743c7
150 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many of which point to a redirector URL. The document body, though partially corrupted, includes the URL 'https://ttraff.cc/wix?keyword=sumaiya+name+image', which is flagged as a malicious redirector. This suggests the document's primary purpose is to direct users to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=sumaiya+name+image
    • https://static.usrfiles.com/ugd/edb4a7_cd746e4dffa74339b6b715c087446064.pdf
    • https://static.usrfiles.com/ugd/857e61_0b06347ce4b847a2ab882b94480ebbe6.pdf
    • https://static.usrfiles.com/ugd/185811_3744ee7a951a4e17b995c7089923334a.pdf
    • https://static.usrfiles.com/ugd/e2b09b_3f8ded4ad018435abdcc51647f7bddb6.pdf
    • https://static.usrfiles.com/ugd/5ed537_d9de88be22424f26872971adc12ab8de.pdf
    • https://static.usrfiles.com/ugd/6166c9_4234d62df65d49eea0db24fc4aa0effd.pdf
    • https://static.usrfiles.com/ugd/7d2910_bbe6c555e96244f9b5bca4421c8d2275.pdf
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/extreme_alarm_clock_ringtone_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kixekitigatozodevejale.pdf
    • https://cdn.shopify.com/s/files/1/0435/4378/9727/files/havana_piano_sheet_music_easy_with_letters.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d26.bin
dc74048a8f0ae0ddca140fce15261399815f2dc9e8efa21514782e66028d93b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D26 4596 bytes
font_01_sfnt_off00005ca5.bin
0fb593fc6de227fff8a07d9c3993cf1d52e140113bc87e88dd7d8320a7f7e865		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA5 10324 bytes
font_02_sfnt_off00008041.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8041 16092 bytes
font_03_sfnt_off00009508.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9508 4324 bytes

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