Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8efba7952d4051e…

MALICIOUS

PDF

49.6 KB Created: 2020-08-02 15:57:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41f24be56109cb036246487924289f3d SHA-1: 7f6ea1df7a6eacb690bb3ab42eac6e48e82060f1 SHA-256: d8efba7952d4051e9661eb57f3edc4ce2d1d9e2de6eef5d875070c1185249d6c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and at least one link redirects to a known malicious URL (ttraff.cc). This suggests a social engineering attack aimed at directing users to malicious content. The document body contains garbled text and what appears to be a reconstructed URL, further supporting the malicious intent. 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.cc/pify?keyword=morph+mod+1.+8+9
    • http://files.sobreribas.com/uploads/1/3/1/1/131164112/gazus.pdf
    • http://files.nextlevelphysique.org/uploads/1/3/0/8/130873826/9397865.pdf
    • http://files.mknhp.org/uploads/1/3/0/7/130776158/2153881.pdf
    • http://files.theholynameretreat.net/uploads/1/3/0/7/130739499/rizatabemuf-fudud.pdf
    • https://cdn.shopify.com/s/files/1/0429/8643/8807/files/wafj_job_board.pdf
    • https://cdn.shopify.com/s/files/1/0438/9063/9016/files/dot_text_symbol.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/kuviroxufodugageloja.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/9644474429.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/vuwasipumapewexukom.pdf
    • https://cdn.shopify.com/s/files/1/0433/8148/9818/files/12024955744.pdf
    • https://cdn.shopify.com/s/files/1/0434/6868/5464/files/78488406601.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/87263822977.pdf
    • https://cdn.shopify.com/s/files/1/0432/5054/8899/files/luponufapajaxobexaripukuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/2325/4179/files/gigogujimaviferuneruminu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/varanomavumozomadeda.pdf
    • https://cdn.shopify.com/s/files/1/0428/5880/7455/files/1836247753.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_off00006117.bin
e90ab5f2de7871c965cb3f3a891c012b98ee7c9dc76172a8828de2f009c8e944		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6117 4652 bytes
font_01_sfnt_off000070e3.bin
6e3aa0ca4693f070223638fab9b05a72501abe53e1f1111a7e5a665fbf985c55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E3 10344 bytes
font_02_sfnt_off0000946c.bin
a0e525c856b967ff69c845bbc26e54474dfe8cb64f9ab7099fe27d3bdb42b809		 pdf-font-stream PDF embedded font (sfnt) at offset 0x946C 16176 bytes
font_03_sfnt_off0000a99e.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA99E 4324 bytes

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