Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d96093bd9230f5b…

MALICIOUS

PDF

45.7 KB Created: 2020-08-22 15:19:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 643578f7190f9a0cc1ea404ffe3b63d3 SHA-1: 4fdf2fc86f194dc45c8e20851d0e13a2bd5ff24e SHA-256: 3d96093bd9230f5b5e4a20abd5b750ca1af25e667d3c961f7bfb477a0e492f7d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is likely used to redirect the user to a further stage of the attack.

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=submersible+pump+installation+guide
    • http://files.roundtuitkitchen.com/uploads/1/3/0/9/130969656/nunejebowagipux-fepenu-rimefofepamifa-rivimewus.pdf
    • http://files.francishurley.com/uploads/1/3/1/3/131384173/deseru_takagejipozumu.pdf
    • http://pezovu.137point5bodycare.com/uploads/1/3/0/8/130814921/8ea7e95.pdf
    • http://teponafo.mhjcmerch.com/uploads/1/3/0/8/130874493/34b5f5616f.pdf
    • https://cdn.shopify.com/s/files/1/0449/5812/2139/files/aocs_official_method_ca_12_55.pdf
    • https://cdn.shopify.com/s/files/1/0434/6380/3046/files/identify_the_adjective_in_the_sentence_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6472/1562/files/blind_alley_movie.pdf
    • https://cdn.shopify.com/s/files/1/0431/7767/2868/files/encyclopedia_of_candlestick_charts_1st_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/taridulozomoxekolakinuku.pdf
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/41193855153.pdf
    • https://cdn.shopify.com/s/files/1/0428/3272/4124/files/plant_embryo_development.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/segenivuzanidisikudir.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/90681077095.pdf
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/68668262987.pdf
    • https://cdn.shopify.com/s/files/1/0428/2292/6492/files/tuwarelifubifepeneleromow.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/vce_textbooks_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8914/files/53686079519.pdf
    • https://cdn.shopify.com/s/files/1/0435/4726/3131/files/91688669223.pdf
    • https://cdn.shopify.com/s/files/1/0433/8457/0012/files/baal_shem_tov_stories.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_off0000741d.bin
9f13e2d768cdafbd4a59582b02e571d8584e8b3949efa4e892423cc14ff29274
pdf-font-stream PDF embedded font (sfnt) at offset 0x741D 5520 bytes
font_01_sfnt_off000086b8.bin
05f29249bd966060c75333d3590ed04b8c9c2fd3048e98e5cb5e157aa85b43aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x86B8 10248 bytes