Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdad5c2322ab5654…

MALICIOUS

PDF

45.4 KB Created: 2020-08-09 02:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c51bb494b7e6c29503f27662f829c26 SHA-1: 29116f6665f07fd5cc3c50097bc4ef1ec8bb7860 SHA-256: cdad5c2322ab5654c28ef58ed1d41d0671e06039f8406c9b8468993f39f14a70
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 external resources. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.ru/pify?keyword=benim+hocam+e%25C4%259Fitim+bilimleri+deneme+pdf+2020', which is likely used to redirect users to malicious sites. Another heuristic identified a PDF link farm, suggesting an attempt to manipulate search engine results or distribute malicious content through numerous links. The document body contains garbled text but also includes the same malicious URL and several Shopify-hosted PDF links, reinforcing the lure.

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/pify?keyword=benim+hocam+e%25C4%259Fitim+bilimleri+deneme+pdf+2020
    • http://files.tnecmn.com/uploads/1/3/1/0/131070539/2937140.pdf
    • http://files.spiritualdirectionminstry.com/uploads/1/3/0/8/130874086/3495967.pdf
    • http://files.benezetterentalcabins.com/uploads/1/3/0/7/130738562/1998256.pdf
    • http://files.banerjeesharmistha.com/uploads/1/3/2/7/132710632/c3d8ce5f8.pdf
    • http://files.boydenschoolpac.com/uploads/1/3/0/7/130775373/lozidodobitubarata.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/kelufuguwok.pdf
    • https://cdn.shopify.com/s/files/1/0434/2946/2165/files/58996624193.pdf
    • https://cdn.shopify.com/s/files/1/0437/8502/7745/files/78961171472.pdf
    • https://cdn.shopify.com/s/files/1/0433/2145/8853/files/kezurutuganiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/4230099758.pdf
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/jisufamesibotakodido.pdf
    • https://cdn.shopify.com/s/files/1/0436/0280/4898/files/physical_science_grade_11.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0840/files/98910383816.pdf
    • https://cdn.shopify.com/s/files/1/0431/0266/6906/files/pepiradakazagafagiluwi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7946/7170/files/46635503548.pdf
    • https://cdn.shopify.com/s/files/1/0437/3970/9605/files/texas_new_hire_reporting_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8102/files/fijapu.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_off00006b79.bin
71002ea6fcab8455f6a0ba352be30f24d254307e2f5e327788313fe58016b902
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B79 5908 bytes
font_01_sfnt_off00007f6b.bin
fdd006993205b823602b5b19b192d7f4c27160507018c610652af2740fa1be15
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6B 12572 bytes