Malicious PDF — malware analysis report

Static analysis result for SHA-256 dab2dfc738c954e9…

MALICIOUS

PDF

44.3 KB Created: 2020-07-18 20:33:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f3e12b09ce9a7ed3ae642cad8d61c7c SHA-1: f84dcad1542034e4ade1f6b471b1d84e34870482 SHA-256: dab2dfc738c954e9d0085d67d888441e2c2c89c9c6ee930b124d6c92d1b165f0
120 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, a technique often used to obscure malicious destinations and engage in SEO link farming. One of the primary links directs to a known malicious redirector, suggesting an attempt to lead the user to a harmful site under the guise of a book download. No scripts were extracted from this sample.

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/wb?keyword=brushless%20motor%20design%20book%20pdf
    • http://files.custombuilddeckshamilton.com/uploads/1/3/1/3/131398479/repukumuwimi_selez.pdf
    • http://files.westmountwildrugby.com/uploads/1/3/1/1/131163705/5601619.pdf
    • http://files.cypresschasecondod.com/uploads/1/3/1/0/131070146/1265378.pdf
    • http://files.kidkatranch.com/uploads/1/3/0/7/130775627/rutupafukoxena.pdf
    • http://files.custombuilddeckshamilton.com/uploads/1/3/1/3/131398479/repu
    • https://gisejabupini.files.wordpress.com/2020/07/bopufixafuvozuxosep.pdf
    • https://mirusafib.files.wordpress.com/2020/06/13363340172.pdf
    • https://zipajufipoj.files.wordpress.com/2020/07/tovizanatalerod.pdf
    • https://bepepuwi.files.wordpress.com/2020/06/xadaf.pdf
    • https://mubijafap.files.wordpress.com/2020/07/nivibevarokusibiwofiviza.pdf
    • https://kuzulod.files.wordpress.com/2020/06/kamiropopijabugefij.pdf
    • https://zunuzimuj868992600.files.wordpress.com/2020/07/soboziw.pdf
    • https://wekunupapire.files.wordpress.com/2020/06/zabumuwogitasala.pdf
    • https://nuzobuko.files.wordpress.com/2020/07/redoneloxid.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4701/files/kepedagijagaganeziwoxa.pdf
    • https://cdn.shopify.com/s/files/1/0429/2031/2991/files/97430784144.pdf
    • https://cdn.shopify.com/s/files/1/0433/3184/6296/files/99735613507.pdf
    • https://cdn.shopify.com/s/files/1/0433/6815/3239/files/xumanajibutulozikukirixul.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1832/files/lavofopisonajinozikiguwed.pdf
    • https://cdn.shopify.com/s/files/1/0433/9679/2471/files/69362320239.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1183/files/rumar.pdf
    • https://cdn.shopify.com/s/files/1/0430/2703/8369/files/vugidufegipor.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4830/files/ramij.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_off00006f7c.bin
b560e01b5493775b3df29df98a8c36121b6729932649ee60dd8800bee2c4e5e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7C 5380 bytes
font_01_sfnt_off000081a4.bin
9455f3f544d29acb17bb6c6e0148b40dc36eb4c2bbcee670012bbcf087592490
pdf-font-stream PDF embedded font (sfnt) at offset 0x81A4 10084 bytes