Malicious PDF — malware analysis report

Static analysis result for SHA-256 20c6db9a760c4f03…

MALICIOUS

PDF

44.8 KB Created: 2020-08-22 01:33:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63a2018bacebf9d51428ccf526dadc4b SHA-1: 538d75905020ff68520c785b5da4f06bfcfe8371 SHA-256: 20c6db9a760c4f038c1df599060f20400bde83d42205caaddcce94d11b165826
120 Risk Score

Malware Insights

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

The PDF contains a link farm, with one critical heuristic firing indicating a link to a known malicious redirector infrastructure. The embedded URL points to 'https://ttraff.cc/pify?keyword=aune+s7+manual', which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF links, suggesting a social engineering lure to drive traffic to malicious sites.

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=aune+s7+manual
    • http://files.alexoconnor-onlineportfolio.com/uploads/1/3/2/8/132814220/05530c216fa378.pdf
    • https://soundnews.net/amplifiers/ampers/aune-s7-pro-driving-hea
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/29949242900.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdf
    • https://cdn.shopify.com/s/files/1/0434/0164/2135/files/capitol_morning_report_jobs.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdf
    • https://cdn.shopify.com/s/files/1/0428/1994/4615/files/banoongi_main_hafiz_e_quran.pdf
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/ielts_academic_writing_task_2_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/97307774531.pdf
    • https://cdn.shopify.com/s/files/1/0450/7149/9416/files/nukogirabipataze.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/carbon_dioxide_oxygen_cycle_worksheet_5th_grade.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_off0000730a.bin
932903e2c91c7c48373bebf330aefa3426b31e74ac9c6445991cb894927ae1ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x730A 4804 bytes
font_01_sfnt_off0000834e.bin
c2297546017580965955eec4a23008041e7749c5968d442403fdac41136a935e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x834E 10588 bytes

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