Malicious PDF — malware analysis report

Static analysis result for SHA-256 f337186fc0d09f9c…

MALICIOUS

PDF

43.1 KB Created: 2020-08-31 21:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a089effbf84816042a155c95fd7226e2 SHA-1: e43039e84255088ba768779785738f051bc6f96a SHA-256: f337186fc0d09f9c35cd24b88c3aa0fd0e5e3dcfa9cf49fe3f27b2444bdb74c6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a large number of external PDF links, suggesting a link farm. The document body and heuristics suggest a lure related to 'ibps. in online form filling', potentially masquerading as an invoice or a task requiring user interaction. The primary malicious URL identified is https://ttraff.com/wix?keyword=ibps.+in+online+form+filling, which is likely used to redirect the user to further malicious content. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer a phishing or redirection attack.

Heuristics 6

  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ibps.+in+online+form+filling
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/my_favorite_food_and_drink_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/8271/8107/files/95425933652.pdf
    • https://cdn.shopify.com/s/files/1/0431/1531/5349/files/bokoguwovoxoxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4764/9429/files/40574412132.pdf
    • https://cdn.shopify.com/s/files/1/0431/8730/6658/files/panis_angelicus_satb_free_sheet_music.pdf
    • https://static.usrfiles.com/ugd/804ff6_6f1e588f376849fb9ce7b6df3bee45d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_f861ee5715104bb1bcc7f9945812e132.pdf
    • https://static.usrfiles.com/ugd/47b1e8_88c79f453d9247b28bdd379941bb7859.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_d2be8d5ec7ef4bceadb8a63b9e49306c.pdf
    • https://cdn.shopify.com/s/files/1/0440/8056/2326/files/all_result_bd_2019_hsc_marksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/91923099359.pdf
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/23179279011.pdf
    • https://cdn.shopify.com/s/files/1/0435/6944/7073/files/64134606445.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdc2cf9ebb4d4a149e0e175c238cc992.pdf
    • https://static.usrfiles.com/ugd/20d83a_36c26551cafc446eaa2d7f38ba5c2c70.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_off00006c00.bin
9fd898801d0ae95163d4952dd12e3d15279b74c282e2f5583acf5a0ebc19aa92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C00 5120 bytes
font_01_sfnt_off00007d5c.bin
13f941abae785899d2dfb104e2716f651306f55f6a7890473fbe7bb05c7a072c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5C 10128 bytes

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