Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d35e4fdef603bf8…

MALICIOUS

PDF

44.4 KB Created: 2020-08-08 04:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5def842ca2c145b1424b97c106046409 SHA-1: aefabe9ac4f32780816273d77e2b12c98416f490 SHA-256: 3d35e4fdef603bf825e6f3f611199bf61ab69ca6c643f39cdc2afc74c86f97c0
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised with a seemingly relevant keyword. It also exhibits characteristics of a link farm, embedding numerous other PDF links, many of which point to Shopify domains. The document body is heavily obfuscated but contains the malicious URL and several other PDF links, suggesting a lure to external content. No scripts were extracted from this sample.

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/wb?keyword=congregational%20prayer%20in%20islam%20pdf
    • http://files.henkvantwillertandventodonorte.com/uploads/1/3/1/3/131383544/xebosaxuparaj_xatetiwidaju_jewigo_samebelek.pdf
    • http://files.vector-business.com/uploads/1/3/1/4/131453821/musujigex_pavagumilowebe_dajunu_dedizi.pdf
    • http://files.albertaorff.ca/uploads/1/3/1/0/131069860/patokaretel.pdf
    • http://files.noreallywhatareyou.com/uploads/1/3/0/7/130775304/9e0ab.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3946/files/kaleshwaram_project_map.pdf
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/96973275015.pdf
    • https://cdn.shopify.com/s/files/1/0443/0761/1804/files/hp_12c_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2632/5409/files/56965380751.pdf
    • https://cdn.shopify.com/s/files/1/0431/7904/9121/files/bagusivaledevi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1566/6840/files/lojuxumaregexajinukoloze.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/96989531453.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/fluid_mechanics_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/0802/2938/files/17449960071.pdf
    • https://cdn.shopify.com/s/files/1/0430/0124/9955/files/nonafuviti.pdf
    • https://cdn.shopify.com/s/files/1/0437/7296/9109/files/rusakegifefozexapomenutip.pdf
    • https://cdn.shopify.com/s/files/1/0432/9462/1862/files/83820525196.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2255/files/nature_and_scope_of_business_finance.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8070/files/75001311402.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_off00006e3a.bin
24b58ddb69cb1db37f66556fdfbeb8f58dba1ce62ea677350860b9b694af1355
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3A 5368 bytes
font_01_sfnt_off0000806d.bin
1db7452d1111c2ec47e3d1221b2b38ad6ffd20f651b13b65242c775812f92f49
pdf-font-stream PDF embedded font (sfnt) at offset 0x806D 10516 bytes