Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f2f0447727560a4…

MALICIOUS

PDF

45.6 KB Created: 2020-08-10 16:14:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7db546a8f7d9c3c0275e592f1fe91429 SHA-1: c7e98ef7569a7eb28cf1e85f47412cc0767e3af5 SHA-256: 2f2f0447727560a4eded567f43b81a4d11012286286f1fea95667b384a97258e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.ru/pify?keyword=benim+hocam+ayt+edebiyat+ders+notlar%25C4%25B1+pdf', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'benim hocam ayt edebiyat ders notlar1 pdf' and the wkhtmltopdf application, indicating a lure to download educational materials which redirects to malicious infrastructure.

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=benim+hocam+ayt+edebiyat+ders+notlar%25C4%25B1+pdf
    • http://files.thebasicsuburban.com/uploads/1/3/0/9/130969051/sevopinozazu.pdf
    • http://files.compusoftcanada.com/uploads/1/3/0/7/130775934/588091.pdf
    • http://files.healthempoweredyou.com/uploads/1/3/1/0/131069886/bulosetisejinojogaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/69785486160.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2734/files/nevor.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/tetukipizoxalunol.pdf
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/60683670872.pdf
    • https://cdn.shopify.com/s/files/1/0439/9818/3582/files/catalyst_characterization_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0434/4758/2870/files/armnicas_en_sistemas_elctricos_industriales.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/golang_iterate_over_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/vexetum.pdf
    • https://cdn.shopify.com/s/files/1/0433/9964/3286/files/tigufos.pdf
    • https://cdn.shopify.com/s/files/1/0430/4066/9849/files/zuroritosebojerige.pdf
    • https://cdn.shopify.com/s/files/1/0434/1750/1853/files/esl_possessive_adjectives_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/kuralivosoparefefidanol.pdf
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/sixazedimeleresipifin.pdf
    • https://cdn.shopify.com/s/files/1/0430/8792/1313/files/60409543448.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/
    • https://cdn.shopify.com/s/files/1/0430/8

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b56.bin
ae44314fe830d5230d4f133a1da21844a2cd50a2eb95cf9de47f33bc8f844afa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B56 5504 bytes
font_01_sfnt_off00005dd4.bin
38226793f67950737b39f2406e5cd9b65cae8787b2c0a86350b067217e0d9369		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD4 11740 bytes
font_02_sfnt_off000082eb.bin
f3b95f1269985bafc3dfb9b5b35e76df8a4d57039a143c013aed99c7cf3a4a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82EB 16344 bytes
font_03_sfnt_off00009864.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9864 4324 bytes

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