Malicious PDF — malware analysis report

Static analysis result for SHA-256 46817c22bcfb4a30…

MALICIOUS

PDF

130.9 KB Created: 2020-08-10 11:12:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d9fa52ac5eedd039d2776706c350347 SHA-1: 826c4b6b23c5ac9ccf3257c4db0a87a81caf6b75 SHA-256: 46817c22bcfb4a307caeb1bd646b64967755647d1c436dc41d0807353e841e88
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a malicious redirector. The primary malicious URL, 'https://ttraff.com/pify?keyword=austria+map+pdf', is directly linked to this redirector. The document body, though heavily obfuscated, contains references to this URL, suggesting a lure to a malicious site. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to distribute the malicious links across multiple domains.

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.com/pify?keyword=austria+map+pdf
    • http://files.jahc2020.org/uploads/1/3/0/7/130739239/8188241.pdf
    • http://files.luxvibes.shop/uploads/1/3/1/3/131381422/ratubiruvitiv.pdf
    • http://files.deeperstillmissions.com/uploads/1/3/1/0/131069860/reropako_zavaserexu.pdf
    • http://dewadab.tonguetiepractitionerinkent.com/uploads/1/3/1/3/131383657/4010507.pdf
    • http://files.unleashourhealth.com/uploads/1/3/2/6/132695828/4742923.pdf
    • https://cdn.shopify.com/s/files/1/0430/7124/2391/files/81192441493.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/winemabedux.pdf
    • https://cdn.shopify.com/s/files/1/0446/6681/4617/files/case_3_3_marketing_to_the_bottom_of_the_pyramid.pdf
    • https://cdn.shopify.com/s/files/1/0432/3416/4893/files/gosezawodobuxez.pdf
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/kamimedovivixu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/exercicios_de_angulos_agudos_obtusos_e_retos.pdf
    • https://cdn.shopify.com/s/files/1/0429/2100/1119/files/91609271072.pdf
    • https://cdn.shopify.com/s/files/1/0432/2348/2525/files/maternal_and_child_health_care_services.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wopesutokuvikoku.pdf
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/wall_street_prep_excel_shortcuts.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/biochemistry_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/medical_appointment_form.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_off0001b8bb.bin
4be1d118dda7615d322a741cbdd0c88116695be0bfce0ec47b2cdf63107a8af5
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B8BB 5144 bytes
font_01_sfnt_off0001ca28.bin
71d358c94068a0dba1c16a9e701bd9362b066956d7efb49dce663494728489bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA28 17056 bytes