Malicious PDF — malware analysis report

Static analysis result for SHA-256 5544acab833312ac…

MALICIOUS

PDF

41.7 KB Created: 2020-08-17 07:40:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08256ae23d9394b2c6625d0d16c2da35 SHA-1: 08822bc4f5fd8e469994b501cfdfc11a99b8c32b SHA-256: 5544acab833312acc0d7365782918b381053935230a5418fe271297c24a38e8f
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The document body includes a call-to-action phrase, suggesting a lure to click the embedded malicious URL. The primary malicious URL is https://ttraff.cc/pify?keyword=class+6+ict+book, which likely leads to further malicious content or malware 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.cc/pify?keyword=class+6+ict+book
    • http://files.hullabaloomusicfestival.com/uploads/1/3/2/7/132740415/zikomigop.pdf
    • https://cdn.shopify.com/s/files/1/0434/7484/5858/files/62458357460.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/ramulakuxoru.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0648/files/jumomoja.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/kobalejimeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/4018/6268/files/aurora_3d_animation_maker.pdf
    • https://cdn.shopify.com/s/files/1/0438/0501/6226/files/allelic_interaction.pdf
    • https://cdn.shopify.com/s/files/1/0448/5634/4737/files/ancient_mesopotamian_religion.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8985/files/fiwejitu.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_off000067fc.bin
3ff3119a581d948bda70e8f7c5e33ba0f8230c5e973fc1e828bd5f1f58d4b64d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67FC 4960 bytes
font_01_sfnt_off000078e2.bin
182a5f166ef26bd88201f52c27eab590b4bd513573f52e0ea8dd1807e0c48390		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E2 9928 bytes

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