Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb8a5d670f6d8d9…

MALICIOUS

PDF

42.1 KB Created: 2020-08-31 02:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7adf0d80a7d7fd14764f7b5600dddfbc SHA-1: d246095c4766b5ead0607c514c89c56cde98ecfb SHA-256: beb8a5d670f6d8d982364800ea038a4a5689d6122d9404000127e6633f0e04af
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'cracked flexispy pro' and a URL that aligns with this lure. The presence of numerous external PDF links suggests an attempt to distribute content or traffic through a link farm.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/wix?keyword=cracked+flexispy+pro
    • https://static.usrfiles.com/ugd/b8c837_64da8608f610430295791fd5f31a32a2.pdf
    • https://static.usrfiles.com/ugd/b0cd75_9a533f5ea2a04e19b943144ea2bf5d07.pdf
    • https://static.usrfiles.com/ugd/b8c837_3da18023befa43ed9d4ec3fe143e4c6e.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b115f2842dc46fd86c817f23cd85627.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d956ce77f8b44fa80c665f0e1b82399.pdf
    • https://static.usrfiles.com/ugd/b8c837_54f5f2e6be474af4b014f18341ef6be4.pdf
    • https://cdn.shopify.com/s/files/1/0431/2888/1318/files/xokojukeditusi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6930/8061/files/3938990791.pdf
    • https://cdn.shopify.com/s/files/1/0432/5762/6792/files/vuxedijigujitepuvesedomal.pdf
    • https://cdn.shopify.com/s/files/1/0441/2735/5032/files/gulfport_school_district_pacing_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/0688/5031/files/occupational_safety_health_and_working_conditions_bill_2020.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_off00006567.bin
5e8bce396c174348d3da4cee409801a6c802f1028672a82bb75050d9feb445a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6567 5288 bytes
font_01_sfnt_off0000777e.bin
58548e7d8a7a79cb8f98e9f8b09b211bcf78ffdae3e28cd0b763018655d40c33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777E 10672 bytes

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