Malicious PDF — malware analysis report

Static analysis result for SHA-256 473f3c635c57710d…

MALICIOUS

PDF

38.0 KB Created: 2020-08-01 21:33:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c520e08f22948717e4c938b3282f3e5 SHA-1: 04784c521faf4e17402b02847662411d6f0c8521 SHA-256: 473f3c635c57710dee3561e71d547c14f427395b147b4855d8732f7bb3e38082
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=yahoo+toolbar+downloaden'. This URL is presented within the document body, suggesting a social engineering lure to trick users into downloading software. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, 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=yahoo+toolbar+downloaden
    • http://files.outdoorkindergarten.org/uploads/1/3/0/9/130969887/jexinipaninupexazoz.pdf
    • http://files.123letsgrow.com/uploads/1/3/0/7/130740033/3777754.pdf
    • http://files.mengkayeducation.com/uploads/1/3/1/6/131607095/9964736.pdf
    • http://files.alliedrenew.com/uploads/1/3/2/6/132695258/kakezaba_gixujotesutew_limoxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/mapukisojuzemajilud.pdf
    • https://cdn.shopify.com/s/files/1/0433/8771/5742/files/41954020623.pdf
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/79187530542.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/rabafusegifodaramuka.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/wopexilujopaviwotom.pdf
    • https://cdn.shopify.com/s/files/1/0434/1327/4780/files/vaxojixetisug.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/sivebu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40133843423.pdf
    • https://cdn.shopify.com/s/files/1/0441/1808/1688/files/begurop.pdf
    • https://cdn.shopify.com/s/files/1/0434/0498/4483/files/livixilufanugatadupolilew.pdf
    • https://cdn.shopify.com/s/files/1/0432/9983/1968/files/topofasanafunazupolunur.pdf
    • https://cdn.shopify.com/s/files/1/0432/7296/2203/files/80867319897.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6819160869.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_off0000584f.bin
66defe5b65b603bd70e562fdfc542d0a95a4dbb1b3e94f11d4915e806f510fbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x584F 4928 bytes
font_01_sfnt_off00006917.bin
532e6f176c651ba62a91eb1458cbcdab3f0a49b2d051b4d87dbaf95dafbc1dbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6917 9884 bytes

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