Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e2257cc54b2564…

MALICIOUS

PDF

41.4 KB Created: 2020-08-11 21:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dc09918ffe2b73b969741d72b0c2ce6 SHA-1: b0fa7c5a299348cfd09de78b7f0fd55d9e8ee1bc SHA-256: e7e2257cc54b2564e8a98b7a6328445dcef80d1cf5b96d0b66532cfc7ea12c2a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=hcu+adalah+pdf', is identified as a malicious redirector. This suggests the document is designed to lure users to malicious sites, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.cc/pify?keyword=hcu+adalah+pdf
    • http://files.cdsbeoblendedlearning.com/uploads/1/3/1/3/131380440/a2cd5e32b248a.pdf
    • http://files.dufrane.com/uploads/1/3/1/3/131379639/nelawid-vaxit-wigikuki-vejifi.pdf
    • http://files.queyroi.com/uploads/1/3/0/9/130969183/zozixotixoju-nutoguwil-saxalilafunafa.pdf
    • http://files.koreanamericanhealthconference.com/uploads/1/3/2/6/132695915/lomuginepil_tebiropamevub_bomakikimarune.pdf
    • http://files.kocanada-usa.com/uploads/1/3/1/4/131437538/zorodoke.pdf
    • https://cdn.shopify.com/s/files/1/0437/8827/1777/files/zimegelabegamu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/kexamaxulapujewuvizufi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3429/6988/files/19651604817.pdf
    • https://cdn.shopify.com/s/files/1/0438/7966/1736/files/saddleback_educational_publishing_basic_english_grammar_book_3.pdf
    • https://cdn.shopify.com/s/files/1/0436/0513/1421/files/71485284504.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/pofozatisilakapifaxukizu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/armitron_watch_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3920/files/82604_weather_forecast.pdf
    • https://cdn.shopify.com/s/files/1/0438/0504/8994/files/48899445997.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/sozivuvomani.pdf
    • https://cdn.shopify.com/s/files/1/0429/6635/2028/files/54770721214.pdf
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/92154982645.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/33814795992.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_off000064ba.bin
6ade646f715797ee702e44a7d199156e8c75f04202ef0ec377796f05d221ce79
pdf-font-stream PDF embedded font (sfnt) at offset 0x64BA 4928 bytes
font_01_sfnt_off00007574.bin
1f12b5bcc8f95307ab51e52aed68015e982d0511439010630f126796e824e1b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7574 10380 bytes