Malicious PDF — malware analysis report

Static analysis result for SHA-256 f411830997a27236…

MALICIOUS

PDF

41.4 KB Created: 2020-08-26 16:49:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5af791713122aea39ecada39b1635ccb SHA-1: 5e8fb5fc2f2f403099b2a61de0a3f180b28aef73 SHA-256: f411830997a27236afde50475581d35b5cc42fe67e1616b229e9274f38cb0eb3
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=dermaroller+avant+apres'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0440/7010/9334/files/impuesto_alcabala.pdf'. The document body, though heavily obfuscated, also contains these URLs, suggesting the primary intent is to redirect users to malicious infrastructure.

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=dermaroller+avant+apres
    • http://files.mikesilber.com/uploads/1/3/1/3/131382841/5674825.pdf
    • https://cdn.shopify.com/s/files/1/0440/7010/9334/files/impuesto_alcabala.pdf
    • https://cdn.shopify.com/s/files/1/0440/6276/9302/files/cancionero_catlico_con_acordes.pdf
    • https://cdn.shopify.com/s/files/1/0430/1219/4463/files/8400692025.pdf
    • https://cdn.shopify.com/s/files/1/0437/5920/6549/files/learning_russian.pdf
    • https://cdn.shopify.com/s/files/1/0431/7128/3098/files/xinonimubozunupiwoparidi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/45969264389.pdf
    • https://cdn.shopify.com/s/files/1/0434/0652/4566/files/deathstroke_sword_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/9015/7473/files/adobe_audition_cs6_serial_number.pdf
    • https://cdn.shopify.com/s/files/1/0431/8078/5823/files/44723755716.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/soraxex.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/lodosolosarifoziw.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/
    • https://cdn.shopify.com/s/files/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006644.bin
343a2dd3e8858013e96d628ee7e4bc342aa43b435f192518bc23988654175b09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6644 5024 bytes
font_01_sfnt_off00007747.bin
30122828804179a2f329771ecab4ee2510c90e9f2411b70ef9312259973d15d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7747 9888 bytes

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