Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d4dc228b959828a…

MALICIOUS

PDF

40.7 KB Created: 2020-08-27 13:09:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbe74cfa0d89dcf67d51a3af149f0e6d SHA-1: 84b10316b31afeb04166509279e620bc5b5d39b4 SHA-256: 1d4dc228b959828a8202ebabada27e839180d02ad171e396ac5c5608e8e3ae16
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.cc/pify?keyword=free+printable+welcome+banner+templa', is likely used to redirect users to a phishing page or download further malware. The document also contains a large number of links to Shopify, which is likely part of a link farm to improve SEO for malicious content.

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=free+printable+welcome+banner+templa
    • http://nirixe.andywilsonmusic.net/uploads/1/3/1/6/131606289/pifosetowogilozo.pdf
    • http://files.kenleighsfiberstudio.com/uploads/1/3/1/4/131411688/6cbf56d1f55c1e.pdf
    • https://cdn.shopify.com/s/files/1/0435/0889/1807/files/igitabo_cy_amategeko_ahana_mu_rwanda.pdf
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/10533193224.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/faravuwagegewuparoweluram.pdf
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/45330343325.pdf
    • https://cdn.shopify.com/s/files/1/0433/6294/3144/files/berberine_and_metformin_taken_together.pdf
    • https://cdn.shopify.com/s/files/1/0436/0162/5252/files/sbi_bank_syllabus_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/5104/7329/files/milizowuvopa.pdf
    • https://cdn.shopify.com/s/files/1/0439/2157/2008/files/sociology_class_12.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/counseling_services_processes_and_methods.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/toxuzalogilunaxobixokago.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_off00006050.bin
e05cbd0b34954e12a89298b6b6932e5810eafa3ec20f78881ba3d319884b9db8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6050 5088 bytes
font_01_sfnt_off0000718f.bin
a8ab05817d0dddbe50f5ca9929f1b9cab5349210a8b463e4716221de7889e927		 pdf-font-stream PDF embedded font (sfnt) at offset 0x718F 10676 bytes

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