Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed85ccb5db06b335…

MALICIOUS

PDF

35.1 KB Created: 2020-08-31 12:38:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66e78296e1b73d20ebad1525f9fbf914 SHA-1: 16b68e361cc443d050d2a6f369ee1185fc2c34c7 SHA-256: ed85ccb5db06b335abbe9c80cfc1681e83c20d1820ac4f9ea7743c7527b42dc8
140 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. Additionally, it hosts a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The document body, though heavily garbled, contains text related to 'guided reading and review workbook' and a URL that matches the malicious redirector, indicating a lure to a potentially malicious site.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/wix?keyword=guided+reading+and+review+workbook+e
    • https://cdn.shopify.com/s/files/1/0434/1032/5671/files/solenoide_libro.pdf
    • https://cdn.shopify.com/s/files/1/0433/6241/8847/files/rovovefujutuvejozi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/10514763169.pdf
    • https://cdn.shopify.com/s/files/1/0434/5973/9814/files/46713810274.pdf
    • https://cdn.shopify.com/s/files/1/0430/7763/2161/files/12019210414.pdf
    • https://static.usrfiles.com/ugd/7f46b5_cdec29ad38f6449c9dcfe4bd19c2e26b.pdf
    • https://static.usrfiles.com/ugd/b8c837_9babca9598b14045ad3889e6a2fec3ae.pdf
    • https://static.usrfiles.com/ugd/362633_e30e477fd1604ecca997a9081d6d1e6c.pdf
    • https://static.usrfiles.com/ugd/8b9728_4912cdd453e5414bb7f637841ab5f95d.pdf
    • https://static.usrfiles.com/ugd/429b25_b19f33c3ac2c46aeab04730e5b05c4f8.pdf
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/wowubulerel.pdf
    • https://cdn.shopify.com/s/files/1/0429/7247/9647/files/35729920915.pdf
    • https://cdn.shopify.com/s/files/1/0437/2421/0326/files/33718596008.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/ffix_chocobo_hot_and_cold_guide.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_off00004a4b.bin
e04e9b3d475531615ae6415894bf95d5ed4415a57e457f6cc28d3bae25812944		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A4B 5172 bytes
font_01_sfnt_off00005c0e.bin
6a7960ee1545cd9c77de729a003222535c11050c6822c54992a28abf30a23cfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C0E 10232 bytes

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