Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd1450dddfbbad6b…

MALICIOUS

PDF

37.6 KB Created: 2020-08-14 13:21:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc7e3b7a1c2f48b9643f7718853bebf8 SHA-1: b9f1562f58312bf56c6df0d761f3ef2d0c8e8816 SHA-256: dd1450dddfbbad6b8c3f8862a1e82c835b4e0f590f47f7d5184580622db1bf43
150 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating it's a malicious redirector link. It also exhibits characteristics of a PDF SEO link farm, with numerous embedded links pointing to external PDF files, many hosted on Shopify. One of the primary links, 'https://ttraff.com/pify?keyword=ksb+easy+select', is identified as a malicious redirector. The document body contains garbled text but also includes the malicious URL and several benign-looking Shopify URLs, suggesting a lure or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=ksb+easy+select
    • http://soloto.stavrias.com/uploads/1/3/1/6/131606146/2665360.pdf
    • http://files.stampstation.com.au/uploads/1/3/1/6/131607404/6eebd.pdf
    • http://files.msmerg.com/uploads/1/3/2/7/132740239/bukose_suwovir.pdf
    • http://files.heart-of-the-city.org/uploads/1/3/1/3/131379277/kujofijumig.pdf
    • http://files.monyda.com/uploads/1/3/0/7/130776786/jiborow_kijofusakedem_vedapefuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3227/files/bikixuzawitigub.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/11182958700.pdf
    • https://cdn.shopify.com/s/files/1/0432/3016/7202/files/kubokimewopanefodilotip.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/bawuzipiragab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xibazukikamemawamiwemin.pdf
    • https://cdn.shopify.com/s/files/1/0429/3384/6172/files/lufabukuwejasu.pdf
    • https://cdn.shopify.com/s/files/1/0454/6474/8184/files/alternative_investments_caia_level_i.pdf
    • https://cdn.shopify.com/s/files/1/0431/0066/8065/files/fobuvati.pdf
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/dipoxujiribaw.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_off00005697.bin
bf4b0b816c1302d45f3cd47588fba76d45f4d5b57785671ed633c761c03a7e2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5697 4908 bytes
font_01_sfnt_off00006764.bin
e71702ef7625b55dbd756d8bc4caf9097f791b4890fbc79e3d81900c44394ba0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6764 10244 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.