Malicious PDF — malware analysis report

Static analysis result for SHA-256 f673205da10e310e…

MALICIOUS

PDF

37.0 KB Created: 2020-08-22 04:07:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54346948a83142c347e23d9f2fa795c2 SHA-1: 989a5245306255ce800a381649d692caacd84321 SHA-256: f673205da10e310e5f8b0ce034dafd36ad595ecf694c6bb17a4583ee7cc8facb
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to lure users into downloading further malicious content. The document body, though heavily obfuscated, contains the target URL, suggesting a social engineering attempt to trick users into clicking the link under the guise of educational material.

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.com/pify?keyword=analog+and+digital+electronics+notes+pdf+vtu
    • http://files.singerforallseasons.com/uploads/1/3/1/4/131407877/7186860.pdf
    • http://files.chalfontyogaandmeditationcenter.com/uploads/1/3/1/6/131636843/9442431.pdf
    • http://files.andysidornxtlvlfit.com/uploads/1/3/0/7/130775727/kotexogififike.pdf
    • http://files.sydneynewhorizons.org/uploads/1/3/2/7/132710787/lozaratorepu_tatira.pdf
    • http://files.appleseedjunction.com/uploads/1/3/2/7/132740408/kasemepawuw_sefigujulozujaf_wujizovepavefi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/hematology_carter_center.pdf
    • https://cdn.shopify.com/s/files/1/0439/7367/3118/files/62168953379.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/giluwabisuwezarel.pdf
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/biomaterials_for_tissue_engineering_applications.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4240/files/39020675306.pdf
    • https://cdn.shopify.com/s/files/1/0440/8590/3525/files/jitojukenegosamitabuwa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/voririsomikidak.pdf
    • https://cdn.shopify.com/s/files/1/0432/9318/0070/files/14946329362.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_off000051f7.bin
0585f0ee1b8006b7efa3c76de3b053abcd096e3706a7c3ceea4ad5efe2d43e18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51F7 5372 bytes
font_01_sfnt_off00006453.bin
867b47b1a582bef2a702da811d1e14bc1bb5ee37339caeb440889cd6e1935ffe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6453 10276 bytes

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