Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfc1866b5a6f08e4…

MALICIOUS

PDF

31.9 KB Created: 2020-09-17 12:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c6736870c94374d349cc1d4106892d4 SHA-1: 5611c8befcd0a22aa6a25d67e0358884abc05320 SHA-256: dfc1866b5a6f08e44b13c1f30ac2f64d37fb59756957b832d0a7e8b15c4789b8
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=conic+sections+worksheet+kuta'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, also contains the same malicious URL, reinforcing the intent to redirect the user. The primary attack pattern involves luring the user to this external site.

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.club/wix?keyword=conic+sections+worksheet+kuta
    • https://70b9e41d-488f-4400-a3bf-11db937f98ea.filesusr.com/ugd/e948c1_f43107c8d75e49e7af66396458daa116.pdf?index=true
    • https://a6eb213b-75cd-4de9-afc9-49a1cb074e17.filesusr.com/ugd/0b46e6_adade462c03a4b66aa08745713c0a894.pdf?index=true
    • https://10d34416-5fda-430f-910a-cd42ec59a9e5.filesusr.com/ugd/6cabbb_cf31f842e9784ccd95fe8f19f0c562de.pdf?index=true
    • https://a4c78e1f-c7ed-4c73-b469-42db715777be.filesusr.com/ugd/405339_0409e3aa76fd4bf8a38d08383011d147.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0428/9308/2783/files/pigujulerokeminoreliwibu.pdf
    • https://cdn.shopify.com/s/files/1/0455/5584/3237/files/lirik_berkibarlah_bendera_negeriku.pdf
    • https://0afb1720-550a-48d7-b33d-5a6d7f1cd87a.filesusr.com/ugd/daca0d_c53347344ddb4aba80f3ed43e74e639a.pdf?index=true
    • https://954ce532-acd2-4cf9-b745-238227f0c0d7.filesusr.com/ugd/bc4951_7801ba06be604420b74d0b46cfe1dfff.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0437/7303/4657/files/block_facebook_feed_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/1239/9009/files/73128377799.pdf
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/dreams_from_my_father_novel.pdf
    • https://cdn.shopify.com/s/files/1/0436/6339/2921/files/how_to_uninstall_bluestacks.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_off000043c1.bin
70c557c9374f0c633c7d403e7570b33a0610deae7fc354940aa187feeab0921a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43C1 4916 bytes
font_01_sfnt_off00005484.bin
35cbf9a489cfc82668884c3406753b094124a23ac0056da8213f095801e70c95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5484 9036 bytes

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