Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4d362308d5ae9e7…

MALICIOUS

PDF

43.9 KB Created: 2020-08-08 12:27:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71a3e05a53a5bc73160353444d5a956d SHA-1: 66406c9b074ebec2c5c4b864d66050348ae694ef SHA-256: c4d362308d5ae9e7d98cba56662ac399380e79f18bcf89a6300b21e2d19984b8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains the same malicious URL and numerous other URLs hosted on cdn.shopify.com and other file-sharing services, likely as part of a link farm to improve search engine ranking and lure victims. The PDF_SEO_LINK_FARM heuristic further supports this, indicating a large number of external links were embedded.

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=abordagem+metodol%25C3%25B3gica+pdf
    • http://files.greatscottideas.com/uploads/1/3/0/8/130814229/dosanabiza.pdf
    • http://files.cleanandgreeninfo.com/uploads/1/3/1/3/131379296/xekevizafu_zejetamekekebe_vaduvovebu.pdf
    • http://files.ivyleaguenursery.com/uploads/1/3/1/4/131407698/5675274.pdf
    • http://files.nmecfg.org/uploads/1/3/0/9/130969166/nejolipeta.pdf
    • https://cdn.shopify.com/s/files/1/0434/6337/7048/files/83540486978.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/36162235444.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/xujejopurowo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3278/8648/files/88761429758.pdf
    • https://cdn.shopify.com/s/files/1/0434/5269/4680/files/62917269965.pdf
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/lijamegud.pdf
    • https://cdn.shopify.com/s/files/1/0432/6634/3072/files/vupupugogudelefon.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/26052980694.pdf
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/54273232277.pdf
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/29896216582.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/11017047882.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/70049349958.pdf
    • https://cdn.shopify.com/s/files/1/0433/3204/2920/files/67813540571.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8486/files/nezugabofepub.pdf
    • https://cdn.shopify.com/s/files/1/0433/3876/0342/files/65682095301.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_off00006863.bin
80e1ea4f92b0ff251f28272fabd2a9446a6a079436dfb03b181c493d7679c9b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6863 5560 bytes
font_01_sfnt_off00007af9.bin
068105b6f012c7b9d548757eaef04cbaa1076a8f2ce42f94ad2bcc11ff226303		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF9 12440 bytes

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