Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f8b5e2c41ceaf2…

MALICIOUS

PDF

37.1 KB Created: 2020-09-03 12:04:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70cc1ef04ecacb4f83d43c3ca03d88b2 SHA-1: 21b79bccfd51cb091f71220b164f0b832fa23479 SHA-256: 38f8b5e2c41ceaf23f4776c804f22a309d8a43481eefa58edb58a9328f7dd62b
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, contains text suggesting it is a 'guide' and includes the suspicious URL. The primary attack pattern involves luring the user to click on the malicious redirector URL, which is likely part of a phishing or malware distribution scheme.

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.link/wix?keyword=restaurants+aosta+guide
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/xinozudepozudavesavaki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/neretidesalefadim.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/tipimugalibugorulejex.pdf
    • https://cdn.shopify.com/s/files/1/0437/6346/6391/files/5831785527.pdf
    • https://cdn.shopify.com/s/files/1/0469/0742/4928/files/gewexumutumej.pdf
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/54784783096.pdf
    • https://cdn.shopify.com/s/files/1/0429/6635/2028/files/tivabebed.pdf
    • https://static.usrfiles.com/ugd/6924eb_cc952fd50d24483197063905ad85bc96.pdf
    • https://static.usrfiles.com/ugd/b8c837_1cd0c15b13944d3c8c0a7ccd19bb429c.pdf
    • https://static.usrfiles.com/ugd/b13fd1_1d8169fb2e4c47e69484c6b3e7aacd29.pdf
    • https://static.usrfiles.com/ugd/824332_3e612d311edb43cd905f904f331a8abe.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/vudasufazexetazasomu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2720/9120/files/homemade_goatee_template.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_off000053b7.bin
feb3d41eadeca0830d11ba51c8805bc4ad76cb78c041a1628765a1a3d839c07a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B7 4968 bytes
font_01_sfnt_off000064ae.bin
af6ee2cd3d89bf1ca542406e527efc36fc75bd669db6e0b2898268f9fdc33173		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AE 10388 bytes

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