Malicious PDF — malware analysis report

Static analysis result for SHA-256 34a36478da2d5f94…

MALICIOUS

PDF

53.9 KB Created: 2020-08-20 22:51:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc9fd138ab32fa9fa1f4c8ec8e49bd13 SHA-1: ff5e27b871bbce51350783f0c8bab8ea413148bd SHA-256: 34a36478da2d5f944d0c2611fc250952d512091772cc79a7840a8df92f59ebfb
160 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.ru/pify?keyword=gmail+photoshop+template'. Another critical heuristic identified a PDF link farm hosted on Shopify, suggesting an attempt to distribute malicious content. The document body, though heavily obfuscated, contains the same lure and URLs. The presence of a 'Password-protected archive lure' heuristic indicates that this PDF may be a precursor to delivering a password-protected payload.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=gmail+photoshop+template
    • http://files.barryfamilystories.com/uploads/1/3/1/6/131606407/buvonojopi.pdf
    • http://files.morroandjasp.com/uploads/1/3/0/9/130969375/wojerodijudo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/sitewij.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/tofafuzimobuni.pdf
    • https://cdn.shopify.com/s/files/1/0448/3717/5456/files/91837096958.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/80040634746.pdf
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/hurry_sickness_reading_answer.pdf
    • https://cdn.shopify.com/s/files/1/0432/3124/8539/files/99769675077.pdf
    • https://cdn.shopify.com/s/files/1/0433/7664/0156/files/wreck_it_ralph_hentai.pdf
    • https://cdn.shopify.com/s/files/1/0434/6858/7174/files/litovaporenowibujuwaro.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/zobikovawewoxosovijamulur.pdf
    • https://cdn.shopify.com/s/files/1/0435/3209/1546/files/6501175056.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/nufosawazabopoki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/34284639045.pdf
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/kuluvozewuzi.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_off00009672.bin
e3bb391c5bf05c86a353d27e052803be4148141f62f4d2ba502162b06756b848
pdf-font-stream PDF embedded font (sfnt) at offset 0x9672 4996 bytes
font_01_sfnt_off0000a74b.bin
62001bdabea5826910a4d8fa808e252b6582296690062bff150f8ff439d9d733
pdf-font-stream PDF embedded font (sfnt) at offset 0xA74B 10352 bytes