Malicious PDF — malware analysis report

Static analysis result for SHA-256 92cb39c713706ef2…

MALICIOUS

PDF

39.9 KB Created: 2020-08-21 11:13:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9248eae7f7e5a10c0263a52175376a2f SHA-1: 05e808e1197509394bf84334b61910a09483c22c SHA-256: 92cb39c713706ef2b3b2e1eaf36238573fef5c80a8f0485af09114f1dfa36ede
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through seemingly benign documents.

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.ru/pify?keyword=hemzone+gamestart+mouse+manual
    • http://gogotabi.cpfcanada.com/uploads/1/3/0/8/130874276/renemuzesetotujive.pdf
    • https://cdn.shopify.com/s/files/1/0434/9470/3270/files/bose_soundbar_300_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/7876/9045/files/esl_reading_comprehension_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0430/8133/4933/files/behavioral_chain_analysis_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/1628/9447/files/98568321809.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/77504656190.pdf
    • https://cdn.shopify.com/s/files/1/0437/9167/9639/files/apple_boot_camp_4.pdf
    • https://cdn.shopify.com/s/files/1/0435/1275/8426/files/homographs_worksheets_5th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/65112012192.pdf
    • https://cdn.shopify.com/s/files/1/0435/3058/4213/files/english_bangla_translation.pdf
    • https://cdn.shopify.com/s/files/1/0461/5520/2723/files/wallpaper_girl_without_face.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7644/files/libro_automatizacin_industrial.pdf
    • https://cdn.shopify.com/s/files/1/0435/6240/1947/files/44451185573.pdf
    • https://cdn.shopify.com/s/files/1/0440/8557/5832/files/24647148075.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_off00005335.bin
e211f2d6e0d1bf1fd17bd5150bc2724fb7c0f1d37b1c69b855d9dcad8de34ab0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5335 2952 bytes
font_01_sfnt_off00005dc3.bin
2c53c3254efcf5bae19195eb167fcc325c5edf4eb61cf83f23f5ed6d49af0459		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC3 5016 bytes
font_02_sfnt_off00006ec3.bin
782f404082702d581596098b6bac1224fe09cc9a0139b91b3e3eb547e44e5660		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC3 10436 bytes

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