Malicious PDF — malware analysis report

Static analysis result for SHA-256 37ae14c2b71249fd…

MALICIOUS

PDF

43.6 KB Created: 2020-08-14 13:05:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72e6c17060116fbfc588e239a5855142 SHA-1: e434abaef91d6fa9b37d0df7e8ab00cf89aefb09 SHA-256: 37ae14c2b71249fd650579475a537444f3b019153cc951f521d96a743392ef16
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to 'elementary book pdf'. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=solution+elementary+book+pdf
    • http://files.esrapglobal.org/uploads/1/3/2/6/132681164/mixobixipeniw.pdf
    • http://files.eastbrooklynhousing.com/uploads/1/3/2/6/132681194/nusamek.pdf
    • http://files.theaccountantthatlovestech.com/uploads/1/3/0/7/130740077/b3710930.pdf
    • https://cdn.shopify.com/s/files/1/0432/0159/3502/files/molofatedefimi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8178/5753/files/96027865120.pdf
    • https://cdn.shopify.com/s/files/1/0437/9020/5090/files/school_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7146/files/purorigekogobukite.pdf
    • https://cdn.shopify.com/s/files/1/0430/9912/7957/files/anfotericina_b_complejo_lipidico.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2503/files/13067442811.pdf
    • https://cdn.shopify.com/s/files/1/0432/9914/3838/files/78369598635.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/fuxunodofa.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_off00006c87.bin
27e9aac23d891ff3447b9b0b8e3a08af8ec459ece7e731e1bafa41cccbc96da5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C87 5420 bytes
font_01_sfnt_off00007ede.bin
5c4253992f912f054a8c95fa355f07a59d0252ddd5f5cad5a817a37823441a09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDE 10292 bytes

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