Malicious PDF — malware analysis report

Static analysis result for SHA-256 d038588a79bf26de…

MALICIOUS

PDF

56.1 KB Created: 2020-08-05 13:20:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64cfcbe90abb94ff2a08294a135fe5ee SHA-1: 57f7153360f97f2ae8aa643b1a95f897b2483454 SHA-256: d038588a79bf26de050cfc792a9d103981d49e8b05bb3d36e43726c145d78a36
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to a book title and mentions 'wkhtmltopdf', suggesting a lure. The primary malicious link identified is https://ttraff.ru/pify?keyword=courage+to+be+disliked+pdf, which is likely used to redirect the user to a further malicious destination.

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.ru/pify?keyword=courage+to+be+disliked+pdf
    • http://files.genevaassemblyofgod.com/uploads/1/3/1/4/131407629/1877435.pdf
    • http://files.mermaidfitnessbump.com/uploads/1/3/1/4/131405977/9307403.pdf
    • http://files.welcomeinspections.com/uploads/1/3/0/7/130740442/347ecca.pdf
    • http://files.tanawanhandycraft.com/uploads/1/3/0/9/130969061/9083761.pdf
    • http://files.wildwindsboutique.com/uploads/1/3/2/7/132740498/luzoxedotazezefizi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/7980262946.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/guwumi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/gutachten_bachelorarbeit.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/20436729759.pdf
    • https://cdn.shopify.com/s/files/1/0430/7202/8823/files/ritunuxanetewer.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/danudan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0163/4213/files/85264103641.pdf
    • https://cdn.shopify.com/s/files/1/0430/3683/5993/files/oxidation_of_alkenes.pdf
    • https://cdn.shopify.com/s/files/1/0436/9760/2713/files/49966605573.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/xuxeniduderarakopige.pdf
    • https://cdn.shopify.com/s/files/1/0433/6700/6364/files/gomatozixus.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/jopijatevemujapidilufoso.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/6025473771.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000090fe.bin
8972bcc8ed6c4b243a42f4c82066623cf83096c273bc09d8399f120db8623348
pdf-font-stream PDF embedded font (sfnt) at offset 0x90FE 5212 bytes
font_01_sfnt_off0000a2d0.bin
5a203b4e8cc1b6a65d80ddf93d9816af2540a5d71110211b0ee5a5da37216cee
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2D0 10044 bytes
font_02_sfnt_off0000c51a.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xC51A 4324 bytes