Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce6ae78f9081a35b…

MALICIOUS

PDF

81.5 KB Created: 2020-08-07 01:27:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0645eea5208a96b7afa6fb7abcc965dc SHA-1: 0bcaea59695b19bd2b600b83a2e0da6c7a29a443 SHA-256: ce6ae78f9081a35b0419f991c116025224dbf0f271d57dc32d6625370d4bc659
150 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, masquerading as vocabulary resources for IELTS. One of the primary links, 'https://ttraff.ru/pify?keyword=english+vocabulary+with+bangla+meaning+pdf+for+ielts', is identified as a malicious redirector. The document's structure and the presence of a large number of outbound links suggest a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=english+vocabulary+with+bangla+meaning+pdf+for+ielts
    • http://files.makeupalchemist.com/uploads/1/3/1/4/131438113/xofowigewi.pdf
    • http://files.ed-gecation.com/uploads/1/3/1/4/131483214/8584785.pdf
    • http://files.trffoodshelf.org/uploads/1/3/1/4/131483149/2a6b1e2fd0e777.pdf
    • http://wowujo.lyncookejewellery.com/uploads/1/3/1/4/131406390/rokedenikutuva_nofinukisavov_dapozugiv_fatugifab.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/am7_g_guitar_chord.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/29233708743.pdf
    • https://cdn.shopify.com/s/files/1/0434/8503/6708/files/zutupevaporizal.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/devijep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vazakiliduvapi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/dadoxewedididinuxoladulil.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/skyrim_special_edition_overhaul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/92425763130.pdf
    • https://cdn.shopify.com/s/files/1/0433/9499/0231/files/9459649655.pdf
    • https://cdn.shopify.com/s/files/1/0431/4438/0578/files/23747096945.pdf
    • https://cdn.shopify.com/s/files/1/0430/1409/5001/files/nejube.pdf
    • https://cdn.shopify.com/s/files/1/0430/5672/6165/files/27357611201.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/79086372433.pdf
    • https://cdn.shopify.com/s/files/1/0430/9529/4105/files/evaluating_algebraic_expression.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b327.bin
2864e3f0f8c580e4e6597cfb55e3cef09b38282eb346d8e7e69fd3fb2fb32e49
pdf-font-stream PDF embedded font (sfnt) at offset 0xB327 5920 bytes
font_01_sfnt_off0000c740.bin
01b3bf5799bd719789f80fdc3161989221adf9f3c398845618263ef5ad963f63
pdf-font-stream PDF embedded font (sfnt) at offset 0xC740 27368 bytes
font_02_sfnt_off00010ba4.bin
b239140e7d8d914b49a9cdf48ed35b75572f03b5f7173a346506207e26f6605c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA4 14384 bytes