Malicious PDF — malware analysis report

Static analysis result for SHA-256 33b5b81589bb7777…

MALICIOUS

PDF

41.2 KB Created: 2020-08-30 02:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42b3c4d404878144c599788b30f33168 SHA-1: 2fde083c9645c1239dced6206e22c838ecdce9d9 SHA-256: 33b5b81589bb77776080f041c6822f557a162836bfdc2f97d8f5535824d7119a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/wix?keyword=anonymous+email+apk'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to shopify.com domains. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to drive users to this malicious endpoint, likely for malware distribution or phishing. 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.me/wix?keyword=anonymous+email+apk
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/17700069051.pdf
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/bizokurixovugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1041/files/vatavatexif.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/73121007565.pdf
    • https://static.usrfiles.com/ugd/f65518_bdf9364c9aef45c68cbbc5f109bf605b.pdf
    • https://static.usrfiles.com/ugd/b8c837_b92c904487cc4e9981450bb482de60a9.pdf
    • https://cdn.shopify.com/s/files/1/0438/6213/0853/files/kekobipudaxev.pdf
    • https://cdn.shopify.com/s/files/1/0461/9498/3075/files/mavirizobevar.pdf
    • https://static.usrfiles.com/ugd/b8c837_fceb8642e2314bf49b72c69d942b1f56.pdf
    • https://static.usrfiles.com/ugd/735189_40e7fe18e2f04e00921a57e46476600c.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e09d8b6de35499d85ff50e2c54497e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b12ea54676b4fd69226921cd694a7aa.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_off00004aef.bin
659077892412891af7ad68a6ccd4626ef70e86e6e1a3da1958a38cec6c8f2bb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AEF 4824 bytes
font_01_sfnt_off00005b34.bin
fa98316bad0ee393e4244be63b1d230beb4724cf855be96ad4f2c87a5b302ae2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B34 2140 bytes
font_02_sfnt_off0000650e.bin
e812690dfadba876023eefc0d637adfe1608764da89929b9f47a8ccec6777359		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650E 10760 bytes
font_03_sfnt_off000089e9.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89E9 4324 bytes

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