Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9441759fd9551d…

MALICIOUS

PDF

43.3 KB Created: 2020-08-23 02:25:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82108b983c090c47a3d351125c9dbcd0 SHA-1: ef42be50b05c35605b71752e711638745acc671d SHA-256: df9441759fd9551d64370dc7916994987a3b91d20165c1991afb1449430add86
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to a 'fitted sheet' and the URL itself, suggesting a lure. The PDF also contains a large number of external links, many pointing to Shopify, as indicated by the PDF_SEO_LINK_FARM heuristic, likely for SEO manipulation or to obscure the malicious redirector.

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.cc/pify?keyword=fitted+sheet+15cm+depth
    • http://files.recaquds.org/uploads/1/3/2/7/132740880/zaluzufiwulugew_vikanagorivag_pejofodeb_nifebagomumatos.pdf
    • http://files.candyandfriends.com/uploads/1/3/0/8/130874276/884966fe755.pdf
    • http://fireleret.annroberts.com.au/uploads/1/3/2/7/132740214/1293760.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/metunixunebaredoruderuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/6655/5557/files/74364728918.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72710717911.pdf
    • https://cdn.shopify.com/s/files/1/0447/1390/2234/files/creativity_and_innovation_in_entrepreneurship_notes.pdf
    • https://cdn.shopify.com/s/files/1/0429/2945/5263/files/cecelia_ahern_the_book_of_tomorrow.pdf
    • https://cdn.shopify.com/s/files/1/0451/5568/0410/files/exercices_orthographe_ce2.pdf
    • https://cdn.shopify.com/s/files/1/0434/8080/9625/files/76579697403.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/bozonikalapubinapot.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/gevotozebamu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87960197539.pdf
    • https://cdn.shopify.com/s/files/1/0430/7887/7337/files/mp_b._ed_2019_form_date.pdf
    • https://cdn.shopify.com/s/files/1/0429/8326/0314/files/fetuburinapewe.pdf
    • https://cdn.shopify.com/s/files/1/0438/1756/6368/files/panotirerujadu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2941/files/revomawupaziwizajejopupi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1900/2268/files/wibade.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_off00006a2a.bin
fd2af289437a659c3511c82e537643f4254cb4848b0ed4301af7a8af5e7ee221
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2A 5108 bytes
font_01_sfnt_off00007b76.bin
56f35bbb9cb7aca6aca575e048dc94f4f39948afbc5ee99b3693831d3b6a42e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B76 11132 bytes