Malicious PDF — malware analysis report

Static analysis result for SHA-256 a12940be379f5940…

MALICIOUS

PDF

45.9 KB Created: 2020-09-08 14:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a1f194397fee0cd98801110a8f4e487 SHA-1: 4ad38e6c20d28fb6b1e080c628fc4c58ab2ca847 SHA-256: a12940be379f59405ba3efe8875bf80ea4aade9e77ce68402c42b30aa6c81161
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one heuristic specifically flagging a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document's primary purpose is to redirect users to malicious sites, likely for further exploitation or phishing.

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=bhima+koregaon+whatsapp+video+status
    • https://static.usrfiles.com/ugd/dcbeda_2ffaf5296048408e91e80da9335d2aab.pdf
    • https://static.usrfiles.com/ugd/a1fb72_af69b68f64c647a2bceb37e54eded4bf.pdf
    • https://static.usrfiles.com/ugd/e4d7df_7c29bdcfc1274c9d8da3c78f2a570284.pdf
    • https://static.usrfiles.com/ugd/4bb894_86e1aef1ae654af599a6e2087834ca11.pdf
    • https://cdn.shopify.com/s/files/1/0432/0346/1283/files/86171244389.pdf
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/mefit.pdf
    • https://cdn.shopify.com/s/files/1/0431/2242/6013/files/40124580149.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/muwazojapesufobovolik.pdf
    • https://cdn.shopify.com/s/files/1/0437/6317/1485/files/sojariwopuxokijutabula.pdf
    • https://cdn.shopify.com/s/files/1/0428/2282/8198/files/tuxilepokavelopulelo.pdf
    • https://cdn.shopify.com/s/files/1/0464/9359/7848/files/financial_reporting_jobs_dublin.pdf
    • https://cdn.shopify.com/s/files/1/0429/6153/5132/files/allianz_overseas_visitor_health_cover_claim_form.pdf
    • https://cdn.shopify.com/s/files/1/0469/3321/3339/files/mumiwinib.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wunize.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006830.bin
0bd81c1c0d6864d342ac11e1d7cdf788a3270fa059bb8213dbaed75220ebbf33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6830 5488 bytes
font_01_sfnt_off00007acd.bin
87c64ee183d6f7a91fc696f2d8a297f1f2a800434100d9ac9095cd2dee4ccf9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACD 9920 bytes
font_02_sfnt_off00009cb8.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB8 4324 bytes

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