Malicious PDF — malware analysis report

Static analysis result for SHA-256 df702b22543520cf…

MALICIOUS

PDF

50.7 KB Created: 2020-08-23 14:19:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5386b1618df9e88ecb412d49d495811f SHA-1: 4ee3044ac53e628609b6cf32d009d12b4b38064f SHA-256: df702b22543520cfaa4383279bc7c577d3fe940d3ea581caaa820bda15f0dd01
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=learning+by+doing+book+pdf, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to the malicious URL, reinforcing its role in the attack. The presence of numerous other PDF links suggests a link farm or SEO manipulation tactic to obscure the true 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.com/pify?keyword=learning+by+doing+book+pdf
    • http://kagajisi.godsloveinpoetry.com/uploads/1/3/2/6/132681352/5439127.pdf
    • https://cdn.shopify.com/s/files/1/0432/3983/3767/files/canon_700d_firmware_1._1._3.pdf
    • https://cdn.shopify.com/s/files/1/0433/0356/7515/files/partnership_accounts_admission.pdf
    • https://cdn.shopify.com/s/files/1/0431/6718/7108/files/61146589595.pdf
    • https://cdn.shopify.com/s/files/1/0446/1009/3219/files/toyota_tacoma_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/mostly_harmless_econometrics_angrist_and_pischke.pdf
    • https://cdn.shopify.com/s/files/1/0454/6310/9790/files/salary_slip_template_malaysia.pdf
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/ar-_15_parts_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0431/3881/0010/files/nivubovewijoxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/5887/8881/files/improve_analytical_skills.pdf
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/14637323197.pdf
    • https://cdn.shopify.com/s/files/1/0427/7947/6134/files/present_tense_passive_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/0110/1985/files/lunasapote.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_off00007daa.bin
6d69c9b7d9b9f3cae0e7933c58e00f57683f71f1b16724cae720804b70870fe8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAA 4956 bytes
font_01_sfnt_off00008e8b.bin
e78f8af48f5e76827a3b30f14b83945bc8bab1637ba49e360b7502b4be5f42a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8B 9824 bytes
font_02_sfnt_off0000b019.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB019 4324 bytes

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