Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b866c9ba0416c89…

MALICIOUS

PDF

40.2 KB Created: 2020-08-24 05:01:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95c3bac1bc697821701a1d86de25a7a6 SHA-1: f533bf62b116e7714a9d95af5e0502c5dd77e920 SHA-256: 8b866c9ba0416c89ca40c31928fdb8fccaf32edf1defd11435f5864055537837
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, many of which point to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains the primary malicious URL. The combination of these factors strongly suggests a phishing or redirection attempt.

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=creepy+lullaby+music
    • http://files.ashleybaines.com/uploads/1/3/0/7/130739489/kedivusowimugo-kiwodufimudune-besaz-bimenujasak.pdf
    • http://zufir.earthriverproductions.com/uploads/1/3/1/3/131383839/riwot.pdf
    • https://cdn.shopify.com/s/files/1/0437/6811/9445/files/17445027419.pdf
    • https://cdn.shopify.com/s/files/1/0446/9918/9402/files/binomial_distribution_statistics.pdf
    • https://cdn.shopify.com/s/files/1/0433/1778/8830/files/wlos_school_closings.pdf
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/rotukepukulevu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0745/1041/files/57704925878.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/toritevuwavewunugiwerezup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34680977850.pdf
    • https://cdn.shopify.com/s/files/1/0429/0212/6751/files/infix_to_postfix_converter_java.pdf
    • https://cdn.shopify.com/s/files/1/0451/9297/0389/files/furalufifev.pdf
    • https://cdn.shopify.com/s/files/1/0433/3702/3656/files/new_priesthood_endorsement_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/8125/2507/files/82160691721.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000537e.bin
5cf55b79c42591f4375177fa6de7127f49911f378dd87178effec3618feddf04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x537E 4928 bytes
font_01_sfnt_off0000643d.bin
668c85521af1989c3095d99a4e25d91fd3ade0e5fa4aec6684b8163ef8bb2c9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x643D 9976 bytes
font_02_sfnt_off00008656.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8656 4324 bytes

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