Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae1dfc39581b10f3…

MALICIOUS

PDF

39.8 KB Created: 2020-08-29 18:07:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6aa3257d89607a99c304dc09be165636 SHA-1: c32009ea08ae5dd20948ee382158792bd46797ac SHA-256: ae1dfc39581b10f39f782f14f6e310d8f09fe6f151073d813ae89eec72e2d47e
120 Risk Score

Malware Insights

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

The PDF file contains a lure promising 'Bloons tower defense hacked unlimited money' and embeds a link to a malicious redirector at ttraff.cc. This indicates a social engineering attack aimed at tricking users into visiting a malicious site. The PDF also contains a large number of links to Shopify-hosted PDFs, suggesting a link farm for SEO manipulation or to obscure the malicious destination. No scripts were extracted, but the primary malicious action is the redirection via the embedded link.

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/wix?keyword=bloons+tower+defense+hacked+unlimited+money
    • https://cdn.shopify.com/s/files/1/0438/2670/8640/files/alphabet_anglais_prononciation_ecrite.pdf
    • https://cdn.shopify.com/s/files/1/0436/7358/3781/files/canoe_paddle_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/wutetaguzojajawosupiti.pdf
    • https://cdn.shopify.com/s/files/1/0433/0147/0366/files/xunuk.pdf
    • https://cdn.shopify.com/s/files/1/0437/5917/3784/files/sevepuwusamemivu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/bividixejefejamivujub.pdf
    • https://cdn.shopify.com/s/files/1/0447/8559/8615/files/cch_chuyn_i_t_file_sang_jpg.pdf
    • https://cdn.shopify.com/s/files/1/0459/0714/8954/files/99854754736.pdf
    • https://cdn.shopify.com/s/files/1/0432/2839/7728/files/luxamovesomuvusefo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/munununexarusod.pdf
    • https://cdn.shopify.com/s/files/1/0431/7705/0272/files/85211880821.pdf
    • https://static.usrfiles.com/ugd/8cbfce_4bf3818f90c84904882ba2cccef9de48.pdf
    • https://static.usrfiles.com/ugd/704566_9ef4a822e87543adbd7cc0cadddb034c.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_off00005b4f.bin
25b3d42e42d5c0b651d17219cb127340a284c573e95e90b6c1ce88bc5260bfb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4F 5568 bytes
font_01_sfnt_off00006e25.bin
b46af29f91992837fec96ea82caaca1086fd776b007ae3ededc356e07e4ca6ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E25 11184 bytes

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