Malicious PDF — malware analysis report

Static analysis result for SHA-256 475765b27d721e96…

MALICIOUS

PDF

43.1 KB Created: 2020-08-29 23:08:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c89d9547fdb63f903d23b685bf89765c SHA-1: 0b370c01fe866d494a9a4a4f97db909548a2b6e9 SHA-256: 475765b27d721e965594e30115d8ab35ff94b7e5ea205e90f88066d94e12f1bc
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=hp+photosmart+c4480+series+driver+download'. This URL is presented within the document body, likely as a disguised download button, aiming to trick users into clicking it. The presence of a link farm further suggests an attempt to manipulate search engine results or distribute malicious content broadly.

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/wix?keyword=hp+photosmart+c4480+series+driver+download
    • https://static.usrfiles.com/ugd/b8c837_588d24831d0d4f7ca37ccbc5fb22e7ae.pdf
    • https://static.usrfiles.com/ugd/ac51ce_828c9e2a43494316a611f055ed4cda2f.pdf
    • https://static.usrfiles.com/ugd/b8c837_806b2b18fa214e2bacc28d818837308f.pdf
    • https://cdn.shopify.com/s/files/1/0444/3917/5335/files/centre_parcs_longleat_map.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/rakomisalepetefenifa.pdf
    • https://cdn.shopify.com/s/files/1/0438/6154/1014/files/2465816919.pdf
    • https://cdn.shopify.com/s/files/1/0434/7500/9686/files/puzozimisevat.pdf
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/92525413020.pdf
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/35771528045.pdf
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/puzewerutiliku.pdf
    • https://cdn.shopify.com/s/files/1/0439/2157/2008/files/deductive_logic_and_inductive_logic.pdf
    • https://cdn.shopify.com/s/files/1/0440/0034/6270/files/50663951191.pdf
    • https://cdn.shopify.com/s/files/1/0435/7039/7339/files/jujadaxemefakarune.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_off0000669d.bin
43828a5437299380d43b6b6fed548dc717a7f7a8c22673c4f92c9b5d326ad2ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x669D 5852 bytes
font_01_sfnt_off00007a6c.bin
ea8b4b86a23c60990a368ff94aa5776a7762dc523735dfafe8b41823388c5905		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6C 11380 bytes

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