Malicious PDF — malware analysis report

Static analysis result for SHA-256 a602434ac919b74d…

MALICIOUS

PDF

34.4 KB Created: 2020-08-17 12:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fe47c56c61f6507dda754bbe97725fa SHA-1: f2ae5a5059842ca01fa30ffd18f74b13ea4bf017 SHA-256: a602434ac919b74d62d350eeb77d5ad4ef88cacdd2abeaf04bbf7ab10930b970
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.ru/pify?keyword=miniclip+racing+games+free', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure. The presence of a link farm and a malicious redirector indicates a social engineering tactic to drive traffic to potentially harmful sites.

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=miniclip+racing+games+free
    • http://jirezija.kimberlyandersonritchie.com/uploads/1/3/1/8/131856666/67538330.pdf
    • http://gejizo.k9justincase.com/uploads/1/3/1/4/131453501/dd6b116ee299.pdf
    • http://files.boatdocksolutionguy.com/uploads/1/3/1/3/131380005/a7009388.pdf
    • http://files.oakgrovechristianschool.com/uploads/1/3/2/7/132740270/7703140.pdf
    • https://cdn.shopify.com/s/files/1/0446/6514/3449/files/riesgo_operativo_y_financiero.pdf
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/biblia_romana_ortodoxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/nabogemitozuzitoda.pdf
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/72118243361.pdf
    • https://cdn.shopify.com/s/files/1/0434/4555/1271/files/engineering_drawing_text_book_by_nd_bhatt.pdf
    • https://cdn.shopify.com/s/files/1/0440/5490/4997/files/literal_equations_examples.pdf
    • https://cdn.shopify.com/s/files/1/0440/8003/8053/files/502447985.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9663/files/bantugan_epic_story.pdf
    • https://cdn.shopify.com/s/files/1/0437/3839/8869/files/30181440878.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_off0000495a.bin
d130a4fa6b7785c8985f67fe6925d721f5c5af7040ed676423b24f8852342b3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x495A 5340 bytes
font_01_sfnt_off00005b6e.bin
c331f1cc244fd0adc9738bf4c53bfaf31d614d37dbd6cff531f9ed3cbad39c8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6E 9764 bytes

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