Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a34cbb6db64a4f2…

MALICIOUS

PDF

49.0 KB Created: 2020-08-30 01:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58f39434906ba72138ba84e9cf3f3355 SHA-1: e28f25b49d6937652576a515870b58a24ba53542 SHA-256: 1a34cbb6db64a4f263a766b1d8526b4c26849eef5b4da9a970726c7efe8410a0
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a user manual. This indicates a phishing or malware distribution attempt. The PDF also contains a large number of links to other PDFs hosted on Shopify, likely for SEO manipulation to improve the ranking of the malicious link. No scripts were extracted, but the presence of the malicious redirector is a strong indicator of 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/wix?keyword=gold%2527s+gym+430i+treadmill+user+manual
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26450283228.pdf
    • https://cdn.shopify.com/s/files/1/0430/6518/0321/files/saxavodesusulanu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/merge_cells_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/sugite.pdf
    • https://cdn.shopify.com/s/files/1/0434/0865/4492/files/gtd_weekly_review_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2774/files/61959683920.pdf
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/6th_grade_math_review_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/5957/6986/files/alice_in_wonderland_full_script.pdf
    • https://cdn.shopify.com/s/files/1/0459/2258/2679/files/boritap.pdf
    • https://cdn.shopify.com/s/files/1/0428/5952/8355/files/95491126132.pdf
    • https://static.usrfiles.com/ugd/7f16bd_f585955ecc634f81b075b92958caf5a3.pdf
    • https://static.usrfiles.com/ugd/735189_d0b9cded1e044c82857c0c28d265cce4.pdf
    • https://static.usrfiles.com/ugd/b8c837_15f326ea0ada4b75873805b2b7f733ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c4e3d1d74f947e1ae4d67666191a89f.pdf
    • https://static.usrfiles.com/ugd/f4de5e_7da9abee20d547928f754f182b854c4b.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_off0000677f.bin
0e640cb56b88f9236eb5f3a4debc2bdb5a3004afd216508d4f6dd60266769c8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x677F 5588 bytes
font_01_sfnt_off00007a7f.bin
dc20735686dfb2fdfc65e557d30db27e746af0d0b6456063f2ffcc5e9a569cb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7F 14244 bytes
font_02_sfnt_off0000a656.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA656 4324 bytes

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