Malicious PDF — malware analysis report

Static analysis result for SHA-256 d707a999a4f58440…

MALICIOUS

PDF

46.5 KB Created: 2020-08-07 23:20:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 153af0669375aa84b33bb5f2674db072 SHA-1: 876cbe3452214f063957739aaac6c3383425e8b7 SHA-256: d707a999a4f58440168e013b19529afffc2b9014010e9228ae1e4bbe43a1b060
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a prominent call-to-action disguised as a free PDF converter. It embeds numerous links, including one to a known malicious redirector at 'https://ttraff.cc/pify?keyword=pdf+converter+to+word+file+free'. This redirector likely leads to a further stage of the attack. The PDF also contains a large number of links to Shopify domains, suggesting a link farm for SEO manipulation to distribute the malicious PDF.

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=pdf+converter+to+word+file+free
    • http://files.lovegreekislands.com/uploads/1/3/2/7/132740982/rosagezawevak-gutusuxexo-dilos-miduj.pdf
    • http://files.dcequestrianimports.com/uploads/1/3/1/4/131452958/vosogu.pdf
    • http://files.vesselartsco.com/uploads/1/3/1/3/131381204/5698121.pdf
    • http://files.lovegreekislands.com/uploads/1/3/
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/83045729956.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/spivak_calculus_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/6466/3967/files/school_attendance_register_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53978683100.pdf
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/nutaxo.pdf
    • https://cdn.shopify.com/s/files/1/0438/9748/7512/files/mofixuvajajonadoril.pdf
    • https://cdn.shopify.com/s/files/1/0431/5709/4559/files/higher_boranes.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/42825077679.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/ralirilituwitonaxunaropa.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_off00007926.bin
92746b1f9c11a7a76a5f9d12b1e9699303a302d5e2c05e5e02b8fdea0e3d763e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7926 4780 bytes
font_01_sfnt_off00008990.bin
485212288018e18683b121fbfdabe352e894a76d7881c74b43dda48f70e5aa83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8990 10412 bytes

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