Malicious PDF — malware analysis report

Static analysis result for SHA-256 d03e941918aa1791…

MALICIOUS

PDF

48.9 KB Created: 2020-08-27 22:15:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86211a6e999cc71865ec4ac38c578797 SHA-1: 73ae9db3ab4aad7e53d088eefc9a847051295db9 SHA-256: d03e941918aa17918102265894a8d555300fbd28dfdc4e7a6a7716a5c608b57f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits a PDF link farm, with numerous links hosted on Shopify, likely for SEO poisoning. The presence of a 'LOLBin Run Command' heuristic suggests potential execution of scripts or commands. The document body, though heavily obfuscated, contains the redirector URL and several other PDF links, some of which are hosted on potentially malicious domains.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=akshay+kumar+teri+meri+kahaani
    • http://wuzukojo.bad-for-your-health.com/uploads/1/3/2/6/132681459/3197283.pdf
    • http://rutopeka.concierge-maps.com/uploads/1/3/1/4/131407226/8219907.pdf
    • http://files.musicmds.org/uploads/1/3/0/8/130814129/b85f5d5c510b9e8.pdf
    • https://cdn.shopify.com/s/files/1/0431/2458/8701/files/30726442188.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/android_animatorset_loop.pdf
    • https://cdn.shopify.com/s/files/1/0433/1264/4251/files/gravely_ztx_42.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0917/files/95845593634.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7358/files/assistive_touch_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/5706/0769/files/puzibakazixo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/sumesejenavumibo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2214/5943/files/29775330369.pdf
    • https://cdn.shopify.com/s/files/1/0429/9676/0730/files/lusowosarokologijitoba.pdf
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/wuruzavojexonadubogifebin.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
stream_005_off00007d40.bin
f199d0e513896fbfff40864c96d8ecd50c35a5a0855986b88e6719362e0aaff4
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7D40 24816 bytes
font_00_sfnt_off00004bca.bin
fc73927383357fb47cc93839050936b6b7464515dda40399f31d42e249fa6eec
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BCA 4820 bytes
font_01_sfnt_off00005bf4.bin
fd72d13c7c6b1cd070444b7016db19a7e27488c6e6ccae1d903d3fd74d4c7be0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF4 9692 bytes
font_03_sfnt_off0000a864.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA864 4324 bytes