Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5ba97d6e8f996d8…

MALICIOUS

PDF

54.8 KB Created: 2020-09-17 12:19:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43ca4683f06b8e130486d3209d02236d SHA-1: 421aaf98986cd686b933f0e7f3440dfa653d4012 SHA-256: a5ba97d6e8f996d80f59ac12eac1d806a6043c4d429e37f6dd38ac2141957b04
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, including a malicious redirector at 'https://ttraff.me/wix?keyword=local+tv+guide+pocatello+idaho+83204'. This suggests a link farm or SEO poisoning attack designed to lure users to malicious websites. The document body itself is heavily obfuscated and contains garbled text, but the presence of the malicious redirector is a strong indicator of malicious intent.

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.me/wix?keyword=local+tv+guide+pocatello+idaho+83204
    • https://ab2719c3-304e-4762-844a-cc110fffc43e.filesusr.com/ugd/c63dba_6389e3994a014bc5a9d84b503a84e5f3.pdf?index=true
    • https://f266762e-ad82-46d7-a4e7-dcc612ede7a6.filesusr.com/ugd/1cc777_547a9a713d91480d91389cd78ff40ddc.pdf?index=true
    • https://2c26f929-83dc-4b6a-8a78-feebea5cbfe6.filesusr.com/ugd/eb4c03_effd4ce8d1684cd0b6d42c0eae507f8a.pdf?index=true
    • https://9c0444de-a224-4d74-b09a-52e80366e023.filesusr.com/ugd/7e6083_0f50928a58014aa98aea91dbb0aee664.pdf?index=true
    • https://b6695c51-3e78-4fe2-8c71-6c97223dc5bc.filesusr.com/ugd/a838c0_ac861091c30a4420b4dad6767439d162.pdf?index=true
    • https://d2f16dc1-dab1-4119-b9e9-353af3de74b5.filesusr.com/ugd/89441e_6eff604aef08471bb7da24563326a161.pdf?index=true
    • https://4c740296-1567-4ec5-aea4-f1a44cf6baf9.filesusr.com/ugd/90423f_5407546ed51842f799fd03720df7c32e.pdf?index=true
    • https://362ae7d4-6185-48d1-b494-6559e9e047ca.filesusr.com/ugd/5c9621_3f19390fbc3d478896faad6cd78a6d15.pdf?index=true
    • https://f078467c-ffd5-42bf-b38f-cab017c746ae.filesusr.com/ugd/28146e_3c75c42e24a4456bb51b3700cfe02b0e.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0428/8777/4374/files/62402768049.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/fupejot.pdf
    • https://cdn.shopify.com/s/files/1/0434/2985/5393/files/48007519400.pdf
    • https://cdn.shopify.com/s/files/1/0435/9412/1379/files/fadanenoranigovapobogiw.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_off000095ff.bin
36a8bddb5860278017e91cf6a1ed0b4529043a6703c371e728ad5d2f23bd84c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95FF 5780 bytes
font_01_sfnt_off0000a9c0.bin
2e225f8aafc286960dadc5ce282d8389ccfe86bc564d92297e7f4ae06a378ec0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9C0 10884 bytes

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