Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1fe01c046a86c7…

MALICIOUS

PDF

48.5 KB Created: 2020-09-13 11:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02d8d48122f39e03e4e4a1005651a2b2 SHA-1: 5108bb95653b5cb1ecd166a40970ecf840bbe1a5 SHA-256: ec1fe01c046a86c736966ca0031264e128a599553763c91355595154d0039624
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which points to a URL related to downloading software. Additionally, it exhibits a high-risk heuristic for a remote support tool lure, suggesting a pretext for further compromise. The document body, though heavily obfuscated, contains the malicious redirector URL and several other URLs, some of which are benign Shopify links, likely part of a link farm to obscure the malicious destination. The presence of a download button lure reinforces the deceptive nature of the document.

Heuristics 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.link/wix?keyword=tubemate+2.2.4+telecharger
    • https://cdn.shopify.com/s/files/1/0438/7464/8232/files/epinephrine_for_anaphylaxis_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/buy_bombay_dyeing_bedsheet_online.pdf
    • https://cdn.shopify.com/s/files/1/0440/1197/8902/files/avid_media_composer_8.pdf
    • https://static.usrfiles.com/ugd/7182f3_4024e5a9e6e746e89f0d96e953740f14.pdf
    • https://static.usrfiles.com/ugd/8de238_80a57aa0e4b8464eb2ea197d09578177.pdf
    • https://static.usrfiles.com/ugd/40b9e6_5b1a238fbf074fc9a0535cf86dc8fce3.pdf
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/talokupudovaposupebim.pdf
    • https://cdn.shopify.com/s/files/1/0435/3084/6363/files/glencoe_algebra_2_chapter_1_review_answers.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/66366773655.pdf
    • https://cdn.shopify.com/s/files/1/0434/1638/7733/files/66154096109.pdf
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/75911919688.pdf
    • https://static.usrfiles.com/ugd/a98ecc_e93965c21cf24a8c969b0e7e10a9bcc5.pdf
    • https://static.usrfiles.com/ugd/6dcf04_a226a51d2b044515877fdc3f9a6a33c5.pdf
    • https://static.usrfiles.com/ugd/1c8c1e_2fad48f7661748e990f20b3d8c2fb2f5.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_off000069a8.bin
8656777f25ce77fa6f752e99360bbf383408464e51555f4f6ece684c5d9d9bcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69A8 5376 bytes
font_01_sfnt_off00007bcf.bin
021f9abf0860477874a2417de68ccd5352a5a61ec4d9a96a388d74f8ad334f6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCF 10128 bytes
font_02_sfnt_off00009eb9.bin
b26aaf717c0acb49ac7968d8b7a76d41f077bc6518e9ba5ddd3b7263bff65651		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EB9 16488 bytes

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