Malicious PDF — malware analysis report

Static analysis result for SHA-256 365a65f6d1749a86…

MALICIOUS

PDF

40.2 KB Created: 2020-08-26 02:51:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ddbef762fb3c5d55d191b8efd4ec96d SHA-1: eee8d501555fe7e45569ea03382ed29b22db14d1 SHA-256: 365a65f6d1749a86e4f5fc53b8a1dfa0921d7f0cd34cdf8bc37d2e53e8a60c42
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'psychology in modules 11th edition pdf free' and the malicious URL, suggesting a lure for users seeking this content. The presence of a malicious redirector indicates an attempt to lead the user to a harmful site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=psychology+in+modules+11th+edition+pdf+free
    • http://wofozoto.aislingnaysmob.com/uploads/1/3/0/7/130740141/vagamepobot.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9917/files/hallelujah_leonard_cohen_chords.pdf
    • https://cdn.shopify.com/s/files/1/0443/0407/2860/files/windows_server_2012_r2_product_keys.pdf
    • https://cdn.shopify.com/s/files/1/0431/2013/2257/files/dezalubijejozebogaxiwu.pdf
    • https://cdn.shopify.com/s/files/1/0439/2783/0696/files/radial_blur_memes.pdf
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/kezimejofo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/sonefebikosabux.pdf
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/alif_novel_episode_3_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7355/2028/files/4118077381.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/vojozideropemiwa.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/towexalavoribagewumuno.pdf
    • https://cdn.shopify.com/s/files/1/0428/9141/1615/files/sample_css_file.pdf
    • https://cdn.shopify.com/s/files/1/0439/7717/9294/files/comptia_cysa_study_guide_exam_cs0-_001.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/41332159141.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_off00005f4a.bin
ec0d0cd292868fadbcfd07bc02752826e05c51eee788f7f6db29cd3a49c73bb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4A 5516 bytes
font_01_sfnt_off000071e1.bin
7c8bf93f91bdb853d6bec018c64b20a4d35f8e80c500d1b51a806b583b83937d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E1 10084 bytes

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