Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd6c8cbc51debbfe…

MALICIOUS

PDF

46.3 KB Created: 2020-08-14 06:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64baec5a7442d4475ff384ee8e45cf19 SHA-1: cb50a8c08f5e72543c84134d0f02595d54401012 SHA-256: dd6c8cbc51debbfe0ecdce993d4cc5b6fcdd576993807d64eccae4a9ae6c78c8
128 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, which is also present in the document body. The document also exhibits a PDF link farm heuristic, suggesting a broad distribution effort. The presence of a 'download button' lure further supports the social engineering aspect of this attack. The primary malicious URL is https://ttraff.cc/pify?keyword=active+directory+for+windows+10+pro, which likely leads to a malicious payload.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=active+directory+for+windows+10+pro
    • http://files.teamupessentrics.com/uploads/1/3/1/8/131856917/lufevunu.pdf
    • http://files.seatoskyallbritishrally.com/uploads/1/3/0/7/130739564/saxobasawenavad_pinupexajuwew.pdf
    • http://files.drjoffee.com/uploads/1/3/1/4/131453924/sonugusuwala.pdf
    • https://cdn.shopify.com/s/files/1/0450/1169/7814/files/numl_online_admission_form_2018.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0016/files/kulezoreneguvevuredavod.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4041/files/wevidiwefaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/1587/2423/files/6190643662.pdf
    • https://cdn.shopify.com/s/files/1/0432/1827/2423/files/mw3_mod_xbox_360.pdf
    • https://cdn.shopify.com/s/files/1/0439/6069/6990/files/osrs_black_demon_slayer_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/92884364380.pdf
    • https://cdn.shopify.com/s/files/1/0440/4461/5830/files/87046331393.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/11550904949.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/rofuwofowofojatusalol.pdf
    • https://cdn.shopify.com/s/files/1/0433/3004/4062/files/123919249.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/damapikoditazumisotenotu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/nelepesafolopufonanamaweb.pdf
    • https://www.microsoft.com/en-us/download/details.aspx?id=45520
    • 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_off0000766a.bin
2e277f5f2a3c00ea01b265d9be35ac534679b0aaa6bc5fdd61472b8bde4115d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x766A 5344 bytes
font_01_sfnt_off000088cc.bin
9fe5768904c7dffd1fe621e1764e14cc0b1a00a241387c80a0cd69f79d8c1bdd
pdf-font-stream PDF embedded font (sfnt) at offset 0x88CC 10288 bytes