Malicious PDF — malware analysis report

Static analysis result for SHA-256 83b707e597ebd0d7…

MALICIOUS

PDF

42.7 KB Created: 2020-07-31 19:13:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8cd3add30d208926971b88515e05246 SHA-1: ab5d670b85d6edad3dbc26e01dd00c8e441830ae SHA-256: 83b707e597ebd0d7e44b2a68ba4081f6cac725ea4b8abbc5f373e1e19951219b
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is further associated with a "void launcher download" lure. Additionally, a PDF link farm heuristic indicates the document is designed to host numerous external PDF links, many of which are hosted on Shopify. The presence of a visual download button reinforces the deceptive nature of the document. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links to facilitate a download.

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.com/pify?keyword=void+launcher+download
    • http://files.johnmccrea.co.uk/uploads/1/3/1/4/131407227/0c21a3e98fea3d.pdf
    • http://files.vickylneal.com/uploads/1/3/0/8/130813055/rofumam.pdf
    • http://files.highmarkcompanies.com/uploads/1/3/2/3/132303209/2345962.pdf
    • http://files.paterpaulus.us/uploads/1/3/0/8/130873791/taxutef.pdf
    • http://files.ctkinggladwin.org/uploads/1/3/1/6/131636862/gigex-fogobaro.pdf
    • https://cdn.shopify.com/s/files/1/0436/4324/0606/files/dedosulojojog.pdf
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/71435734465.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/xozav.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/durusibowipeze.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/junubojidodarepuneg.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/rurunugis.pdf
    • https://cdn.shopify.com/s/files/1/0440/4248/5910/files/4812974163.pdf
    • https://cdn.shopify.com/s/files/1/0429/6520/5141/files/xadukafomobaxokonu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/98319214304.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/89191283758.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/ratexojegupuguvajipawut.pdf
    • https://cdn.shopify.com/s/files/1/0435/8343/9003/files/91479798888.pdf
    • https://cdn.shopify.com/s/files/1/0439/0486/0328/files/77379832507.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_off00006a6a.bin
4c0e555396d1e46830ce07b1c668259fea1a7bccdb3cf1b4d6021272434ef8ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6A 4904 bytes
font_01_sfnt_off00007b22.bin
46a1a48d127011a807c1cbd0d599f5c447c97bf9f312af23afe34ad85286954b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B22 10096 bytes