Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f7d706a08bf6490…

MALICIOUS

PDF

35.0 KB Created: 2020-08-29 03:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fecd1474a3e4223e26eb876508d65865 SHA-1: d367d228453e199cf02f0ce198846d7b0ab6137e SHA-256: 3f7d706a08bf6490f5ec25c8597260876c97e693463d3dc5800810a7c9172da6
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for 'alphabet tracing worksheets'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The file's structure and link farm indicate a social engineering attempt to drive traffic to malicious infrastructure.

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.ru/wix?keyword=alphabet+tracing+worksheets+capital
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/lisilu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/xusevojidutukomu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6853/8521/files/16641458528.pdf
    • https://cdn.shopify.com/s/files/1/0430/6593/3985/files/90005506635.pdf
    • https://cdn.shopify.com/s/files/1/0435/8003/1135/files/pupevefinogesif.pdf
    • https://static.usrfiles.com/ugd/b8c837_c42e6703235b46b7b7d138508d0cc301.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/house_rent_agreement_format_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/8250/5628/files/nofobad.pdf
    • https://cdn.shopify.com/s/files/1/0464/7957/3160/files/simple_brochure_booklet_template.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b4fe78759e04684aabf1f8158644440.pdf
    • https://static.usrfiles.com/ugd/b8c837_e96e6d9c99754abbb5a9873e870e0959.pdf
    • https://static.usrfiles.com/ugd/b8c837_b830d38f1a4344fc956e4ca7ad36a12a.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf4dafc8180c4630bfbebbdf1f5301c9.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_off00004a98.bin
256e624eea41e2129099f5a1d121f6a45de19061e0c02a13481f8d539b3c4318		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A98 5480 bytes
font_01_sfnt_off00005d3c.bin
6f0d7dafc40f945c2896d35484d0b81056b73343176e024f1e1922674eefc0bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3C 9992 bytes

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