Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae9da52c76dc3ddd…

MALICIOUS

PDF

40.2 KB Created: 2020-08-09 16:13:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df320536d767a99f6ed2cd57d35d59a5 SHA-1: f95c4484b56382339a321525266e59a27e858c5d SHA-256: ae9da52c76dc3dddb3bd164f9fb5c31c223f4a5f6c9afda4a84b4f3e33863957
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a Halloween word search, which is a common lure for phishing or malware delivery. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the link points to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a link farm, likely to improve search engine ranking for malicious content. The embedded URL https://ttraff.com/pify?keyword=halloween+word+search+printable+pdf is the primary indicator of malicious intent, redirecting users to potentially harmful content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=halloween+word+search+printable+pdf
    • http://fedirunu.splendiferossity.com/uploads/1/3/0/7/130740596/mafag.pdf
    • http://files.tangoclt.com/uploads/1/3/2/7/132740458/9679460.pdf
    • http://files.confectionatelyyoursbakery.com/uploads/1/3/0/9/130969548/20dfa8598f8cb.pdf
    • http://files.niwawriters.net/uploads/1/3/1/8/131872107/2c2f0.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/advanced_technical_analysis_course.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0406/files/all_of_me_piano_score.pdf
    • https://cdn.shopify.com/s/files/1/0433/1493/8014/files/a_level_maths_edexcel.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/vafezo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2505/6412/files/basic_electronics_components_checking.pdf
    • https://cdn.shopify.com/s/files/1/0432/7152/0414/files/toworinetavasimilos.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/personal_finance_kapoor_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/2166/3397/files/bujoregifulaviwuzetej.pdf
    • https://cdn.shopify.com/s/files/1/0430/5816/7959/files/maths_olympiad_books_for_class_8.pdf
    • https://cdn.shopify.com/s/files/1/0429/1349/7247/files/distribucion_normal_campana_de_gauss.pdf
    • https://cdn.shopify.com/s/files/1/0430/8379/2548/files/zirorogipurofuromani.pdf
    • https://cdn.shopify.com/s/files/1/0436/1663/2994/files/beal_ropes.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_off0000613e.bin
593ff0a693fd25be535d0b7ff97f642aec20812610b165c4e9c37d4c2fb366a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x613E 5436 bytes
font_01_sfnt_off000073bd.bin
b56b8724b4504ce8b0ebf20bd41f573d235184a5c782df43e287e31de29cb2ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x73BD 9424 bytes