Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1f019fb67952498…

MALICIOUS

PDF

40.4 KB Created: 2020-08-30 16:18:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49c1a6d7691ec80823630d370f4cdcba SHA-1: 4cc2a9e7418e9e8b899fb56b5dfe97d4d00e022b SHA-256: c1f019fb67952498bc8571bccd5d75722a851b6b0a35f4ae67750219e2c8306d
120 Risk Score

Malware Insights

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

This PDF document was identified as malicious due to the presence of a large number of embedded links, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One critical heuristic firing specifically noted a link to known malicious redirector infrastructure at https://ttraff.cc/wix?keyword=kits+dls+2019+juventus. The document body contains garbled text but also repeats the malicious URL and several benign-looking Shopify URLs, suggesting an attempt to disguise the malicious intent.

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.cc/wix?keyword=kits+dls+2019+juventus
    • https://cdn.shopify.com/s/files/1/0435/4716/4826/files/apass_music_videos.pdf
    • https://cdn.shopify.com/s/files/1/0430/3355/9203/files/vosubobonunizerimum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zeranosorijajigafa.pdf
    • https://cdn.shopify.com/s/files/1/0443/2871/4396/files/chronological_resume_format_for_students.pdf
    • https://static.usrfiles.com/ugd/b8c837_703ffef223da4f76a51eb4bc49d24e1d.pdf
    • https://static.usrfiles.com/ugd/cc089a_94d00c1ebbb0452ca3b3894c37c674ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_b3df1840de6e486e9f91344900fc64ae.pdf
    • https://static.usrfiles.com/ugd/aef5b7_d938d58ecb324cc2b53df9873fa542a6.pdf
    • https://static.usrfiles.com/ugd/b56239_6d49ac2d57ab4b8f9b52e574e0533fe4.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9221/files/linville_gorge_hikers_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/7008/7587/files/56352213288.pdf
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/mapetenejelalipojum.pdf
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/63894311300.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_off000054f0.bin
1491fc62624a8f5197b2107dead5184e9338710813717a750336c3fec50d8c2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54F0 4872 bytes
font_01_sfnt_off0000659e.bin
b6b267e4fbd10d04e43f238703e66d61d9b9dcf37bd37f807e91d9bc90a483e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x659E 9836 bytes
font_02_sfnt_off00008722.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8722 4324 bytes

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