Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e0d9efa94a6e440…

MALICIOUS

PDF

57.0 KB Created: 2020-08-09 13:30:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44e006c48d32cc717ca8bea59f7eb37d SHA-1: 3d51a92575e5bae71ed614205faca0a899184f22 SHA-256: 9e0d9efa94a6e440997e0802d91a086a564fc2e3af6f51a1e493f269f9be73cb
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=assignment+problem+hungarian+method+pdf'. This URL is likely part of a phishing or scam campaign designed to lure users to malicious content. The document also contains a large number of embedded external links, many hosted on cdn.shopify.com, which is flagged as a PDF link farm. The document body itself contains obfuscated text and the target URL, further supporting the malicious redirector 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/pify?keyword=assignment+problem+hungarian+method+pdf
    • http://files.riversidechapelforbes.org/uploads/1/3/0/8/130874474/nunokekuponuge.pdf
    • http://tizeniz.jingwilliams.com/uploads/1/3/1/1/131164250/bekolatow.pdf
    • http://files.greenwichyouthcenter.org/uploads/1/3/1/4/131437563/db29d375.pdf
    • http://files.scrantontennisclub.com/uploads/1/3/0/8/130874458/4183253.pdf
    • https://cdn.shopify.com/s/files/1/0437/8948/4189/files/sexorobazovi.pdf
    • https://cdn.shopify.com/s/files/1/0440/4019/2150/files/typing-_speed-_test._aoeu._eu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6597/4690/files/zogefidiwiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/tutefiki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90379225571.pdf
    • https://cdn.shopify.com/s/files/1/0428/7784/5671/files/rovudapobuxe.pdf
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/xupuvijudi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0682/7429/files/zejan.pdf
    • https://cdn.shopify.com/s/files/1/0432/4294/6715/files/69432313770.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/74089205887.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/tizoxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/35929458318.pdf
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/nuzusetudetu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9886/4800/files/33858160601.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_off0000877b.bin
cc10035a13c4b2cbb89d9017ae301ac060da9e13d12207d566a5f971318ba1ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x877B 5584 bytes
font_01_sfnt_off00009a44.bin
b1a1fc94cc277afb3c8ec61255dc5e07ce92761a43c93474b1723d3ec6fd6d4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A44 10732 bytes
font_02_sfnt_off0000bf2f.bin
68d4bb40c1dcb0ad4b85299c2133bacc54bcacf50f888888ca8529624987f635
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF2F 16540 bytes