Malicious PDF — malware analysis report

Static analysis result for SHA-256 e862fad97a0f1264…

MALICIOUS

PDF

43.5 KB Created: 2020-08-24 07:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60210f121e72ec3b7b9e47cc69d3e1f5 SHA-1: 1b432fdd36ab78ac0ca644b11fe12221f167a98e SHA-256: e862fad97a0f12645375005887e2194275dc869a8c9df803c8fc286e4a97c1c5
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=sample+grading+sheet+for+senior+high+school'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, a PDF link farm heuristic was triggered, suggesting an attempt to obscure the malicious destination by linking to numerous other PDFs, many hosted on Shopify. The document body itself contains the malicious URL and other benign-looking 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.cc/pify?keyword=sample+grading+sheet+for+senior+high+school
    • http://wamelo.whimsyphotographyandgifts.com/uploads/1/3/0/7/130776445/6eadd4445.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/11540542211.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8708/files/wall_street_and_the_bolshevik_revolution_trke_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/7119/9642/files/glassless_mirror_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/programmer_cv_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/78346384687.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/action_potential_of_heart.pdf
    • https://cdn.shopify.com/s/files/1/0429/6281/3084/files/gasap.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9651/files/pmi_project_lessons_learned_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/3031/5159/files/sabafasurivulavewibon.pdf
    • https://cdn.shopify.com/s/files/1/0432/4642/0136/files/79367267385.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1550/files/arabic_keyboard_software_free_for_laptop.pdf
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/18924834521.pdf
    • https://cdn.shopify.com/s/files/1/0439/3798/8766/files/ejemplo_de_informe_de_auditoria_interna_de_una_empresa.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_off00005d06.bin
caf477318253c5d142823e9df14c2c995bdd4c5964567a252fb76a0c26917c55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D06 5672 bytes
font_01_sfnt_off0000701c.bin
6a3ec86b8f66ab9beadacf53274dc764d631e8114ea1eb33de91e620939ed681		 pdf-font-stream PDF embedded font (sfnt) at offset 0x701C 15768 bytes

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