Malicious PDF — malware analysis report

Static analysis result for SHA-256 2db6ef6ed9cedded…

MALICIOUS

PDF

58.0 KB Created: 2020-08-21 00:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c3cb40713ec5893a2b220a2a86e9097 SHA-1: 18be6ac3d24161e9996a98d1c786aa6548b23a4b SHA-256: 2db6ef6ed9cedded5e22ec007886530cf303be064624c18ae0ec87ab9ec112be
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=speaking+templates+for+toefl'. This URL is presented within the document body, suggesting a social engineering lure to disguise the malicious intent. The PDF also contains a link farm heuristic, indicating a broader effort to distribute malicious content. The primary attack pattern involves redirecting the user to a potentially harmful site under the guise of providing useful templates.

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=speaking+templates+for+toefl
    • http://files.stillnessinmovement.com/uploads/1/3/1/6/131606261/jobaso.pdf
    • http://files.zazaboocosmetics.com/uploads/1/3/1/0/131070579/mefosexemof-zuridetixu-piwinipetis.pdf
    • http://files.jshempsters.com/uploads/1/3/1/4/131454620/1375045.pdf
    • https://cdn.shopify.com/s/files/1/0433/1284/0862/files/sogemebegil.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/xewefugiwi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8370/1155/files/lesson_plan_template_teaching_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/dososekilewuvi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87745409623.pdf
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/fegavo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8776/4387/files/fajepasulovale.pdf
    • https://cdn.shopify.com/s/files/1/0435/2301/4824/files/ipl_2020_schedule_full_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3683/4981/files/gomukobekogivi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1761/7057/files/kowefa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6902/2109/files/a_level_modern_physics_notes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009abd.bin
013fc9f45313cdddd5762e6694753e55f6a85ad2eec225b6e17fd140af1ee5c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ABD 2952 bytes
font_01_sfnt_off0000a54c.bin
34ee9c9f892a6ea7e97755dad39059f02f3465cdf03a07daaa8bc66f180ebcc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA54C 5388 bytes
font_02_sfnt_off0000b78b.bin
06aac9a95de23c570a51156adbecaf3f4fb0e0e475404f231633c71c0b0f11d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB78B 10128 bytes

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