Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e2dee0381dd45f…

MALICIOUS

PDF

41.8 KB Created: 2020-08-28 05:44:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77248ec97e50b45a697045b9ca44188d SHA-1: f90bed37a764b988bcf27e3c54a65576e041fa7f SHA-256: 37e2dee0381dd45f52fff749d1af604c5adad9cc06325249f35599b42e1d9311
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic. This suggests the document is designed to trick users into clicking a link that leads to malicious content, likely for further exploitation or malware delivery.

Heuristics 4

  • 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.
  • 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.ru/pify?keyword=indesign+storyboard+template
    • http://files.privateyogabondi.com/uploads/1/3/0/9/130969192/wutepuganer-kakuwumuki-nobulisijigofo-zezilajojosip.pdf
    • http://files.abtc2018.com/uploads/1/3/1/3/131378776/7965888.pdf
    • http://files.lrbred.com/uploads/1/3/1/6/131636956/6837414.pdf
    • https://cdn.shopify.com/s/files/1/0431/2835/7020/files/wv_jails_info.pdf
    • https://cdn.shopify.com/s/files/1/0431/0804/0853/files/poxenapuxupurekoxekin.pdf
    • https://cdn.shopify.com/s/files/1/0436/1771/4338/files/dusutege.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/piritolapefutefozopepi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8078/files/simple_sublease_agreement_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/6930/8061/files/ninekanotajonuw.pdf
    • https://cdn.shopify.com/s/files/1/0439/5863/2606/files/nostalgic_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/8564/4454/files/google_traduction_anglais_en_franais_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0437/9167/9648/files/unity_reload_scene.pdf
    • https://cdn.shopify.com/s/files/1/0432/6077/2510/files/dazazoxokasemede.pdf
    • https://cdn.shopify.com/s/files/1/0439/4795/0248/files/35819569864.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_off0000585b.bin
c738ed4c92b78f0c718715d692b5109f5a21bebf332e0a27b5b287fe6e1f292d
pdf-font-stream PDF embedded font (sfnt) at offset 0x585B 5248 bytes
font_01_sfnt_off00006a11.bin
7f95958ec79b272a1fde347d5e145352d6945f33691592cc8147ed31dcdd662b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A11 10096 bytes
font_02_sfnt_off00008c70.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C70 4324 bytes