Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b9346a1fd357a05…

MALICIOUS

PDF

44.2 KB Created: 2020-08-24 22:24:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c3fcaee827cf7a0f936e5a6748cb03c SHA-1: 6e2c81cc7cbc035d754a0b69507163d86110e450 SHA-256: 2b9346a1fd357a0518027cdf9f4531d3ea8ca8cbbc25ecd645c8472a9283813d
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a malicious redirector link to 'ttraff.ru', suggesting an attempt to lead users to malicious content. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of numerous links, including those to potentially benign Shopify domains and other unknown domains, indicates a link farm or redirection strategy. No scripts were extracted from this sample.

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=sustainability+report+pertamina+2018
    • http://jefifeliv.raypecbasketball.com/uploads/1/3/0/8/130874493/mekuraxolor_duves.pdf
    • http://files.constancebretes.com/uploads/1/3/0/7/130740342/9045686.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/xifemopevadow.pdf
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/accessory_structure_of_the_skin.pdf
    • https://cdn.shopify.com/s/files/1/0437/1628/0469/files/kadaboxerewugivag.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9375/files/49521035699.pdf
    • https://cdn.shopify.com/s/files/1/0440/0729/3086/files/rinuwediterojomosuteviti.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/kivekegekagupo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/xexirixajafulek.pdf
    • https://cdn.shopify.com/s/files/1/0437/1356/0731/files/43298183655.pdf
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/29468431006.pdf
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/86957573148.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_off000060db.bin
a6441744325a1f8f7b42dc507f289a2f899acd68745281294854f8f333c545fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60DB 5712 bytes
font_01_sfnt_off00007429.bin
a6c1e08e8d3a82b5153ebceae509ea676082aad73ddf1a2589c40f4590e754cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7429 9896 bytes
font_02_sfnt_off0000961b.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x961B 4324 bytes

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