Malicious PDF — malware analysis report

Static analysis result for SHA-256 77936f544f7fea61…

MALICIOUS

PDF

35.0 KB Created: 2020-10-16 13:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 790b3246ea0bf8d9dd8884476f45d76c SHA-1: 1b145ffeb2ef458dea3d8c66e6da35f1f1fa7631 SHA-256: 77936f544f7fea6184febd7399e37e5e8b6fefdb4cb5315d230c7c52f67390a7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the malicious URL and numerous other URLs, many hosted on Shopify. This suggests an attempt to direct users to malicious or potentially malicious content, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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=insignes+scouts+et+guides+de+france
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/5928710.pdf
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/basaxe-ruzikifigawu.pdf
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f87246e4531b.pdf
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f87c05dce1b0.pdf
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f876bfeef113.pdf
    • https://cdn-cms.f-static.net/uploads/4366987/normal_5f8750979df0f.pdf
    • https://cdn-cms.f-static.net/uploads/4369768/normal_5f89456beb3a7.pdf
    • https://cdn-cms.f-static.net/uploads/4369936/normal_5f896f9f1eab3.pdf
    • https://cdn-cms.f-static.net/uploads/4369486/normal_5f880f669888c.pdf
    • https://cdn-cms.f-static.net/uploads/4366028/normal_5f86f9e579ece.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9192/6948/files/pro_forma_income_statement_example_excel.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/malup.pdf
    • https://cdn.shopify.com/s/files/1/0478/7703/0054/files/psych_theme_song_in_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0438/5865/7430/files/72249882830.pdf
    • https://cdn.shopify.com/s/files/1/0502/2996/9074/files/64635150681.pdf
    • https://cdn.shopify.com/s/files/1/0434/8713/3860/files/lenovo_yoga_2_pro_manual_download.pdf
    • https://cdn.shopify.com/s/files/1/0484/3637/9816/files/36491239078.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/41690869880.pdf
    • https://uploads.strikinglycdn.com/files/a85a4361-dd01-4264-b007-ef29344109a4/sajotugisama.pdf
    • https://uploads.strikinglycdn.com/files/6cfce671-8e20-4c8b-9ebc-8a2df0fe0bce/16006868664.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006373.bin
4b53ebda1db10521cf8ad90ade5ed2eb496f108bb018656d8d95e0157ce8c833		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6373 5092 bytes

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