Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f6459ce8dea325…

MALICIOUS

PDF

40.9 KB Created: 2020-08-14 03:32:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18cb6499eb22d4238f02b6abcb1e71c6 SHA-1: c3efae31824c1214d5418cd95d368c277e618669 SHA-256: d3f6459ce8dea325b6bfdca6521b2f5e4c9b0eaadf75cf53dcdb4de1fd2a5319
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=non+conformance+report+template+construction'. Additionally, it features a PDF link farm with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains references to these URLs, suggesting a lure to download or visit malicious content. The presence of a visual download button heuristic further supports a malicious workflow.

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.cc/pify?keyword=non+conformance+report+template+construction
    • http://siwapi.aplaceforme.net/uploads/1/3/1/6/131637814/3126632.pdf
    • http://solekuxow.authorjuliespencer.com/uploads/1/3/1/3/131380213/52449aeccf.pdf
    • http://jadowovev.shamancellardoor.com/uploads/1/3/0/9/130969573/3798072.pdf
    • http://files.janesmitheditor.com/uploads/1/3/0/8/130814902/5117735.pdf
    • https://cdn.shopify.com/s/files/1/0434/5243/2537/files/jardin_l_encyclopdie.pdf
    • https://cdn.shopify.com/s/files/1/0449/8112/5278/files/73868394208.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/jadajujunodowukoban.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/28912821023.pdf
    • https://cdn.shopify.com/s/files/1/0432/7997/4556/files/zesipexukepanisabagal.pdf
    • https://cdn.shopify.com/s/files/1/0431/8412/8151/files/f_b_services.pdf
    • https://cdn.shopify.com/s/files/1/0437/5642/1269/files/3620603395.pdf
    • https://cdn.shopify.com/s/files/1/0440/1060/2661/files/belarus_visa_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/5987/9834/files/calabozos_y_dragones_requiem_comic.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/87958816059.pdf
    • https://cdn.shopify.com/s/files/1/0432/5795/4467/files/gowilosexeru.pdf
    • https://cdn.shopify.com/s/files/1/0432/1892/7779/files/enciclica_benedicto_xvi_caritas_in_veritate.pdf
    • https://cdn.shopify.com/s/files/1/0429/6713/8470/files/3585541758.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_off000062db.bin
e94b1ae495be53d1a9f847c6c6ca7df97ed3289fc061a65d63eb2fd2823c2f29
pdf-font-stream PDF embedded font (sfnt) at offset 0x62DB 5132 bytes
font_01_sfnt_off00007434.bin
79899d16fa5411792c660f8ccbb451f54c0858b004587392f7353c8d06830b4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7434 10096 bytes