Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb1dd826c3ad5ab1…

MALICIOUS

PDF

53.4 KB Created: 2020-08-10 04:19:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6388927389a1d068c3282be8331d08b3 SHA-1: efd435557039129446de420348c33f8fc4cc6c26 SHA-256: fb1dd826c3ad5ab187ef57902e3f4a322366aa25431e5f2d7fe09c76889fd4c0
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary malicious link directing to a redirector. The document body, though obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=que+es+calidad+total+en+una+empresa+pdf', which is flagged as malicious. This indicates the PDF's purpose is to redirect the user to malicious infrastructure, likely for further exploitation or phishing.

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=que+es+calidad+total+en+una+empresa+pdf
    • http://files.jhestekin.com/uploads/1/3/1/3/131383514/jatilirabiranadi.pdf
    • http://vanamefoj.aupanhellenic.com/uploads/1/3/2/6/132695278/9517923.pdf
    • http://files.paulwesselhoft.com/uploads/1/3/2/8/132815183/6533243.pdf
    • http://files.undergroundscoffeebuffalo.com/uploads/1/3/1/4/131437306/1479938.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/vizifaluligurew.pdf
    • https://cdn.shopify.com/s/files/1/0432/8869/0844/files/xavokudaludawemuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/1628/9447/files/99552337963.pdf
    • https://cdn.shopify.com/s/files/1/0433/6697/3589/files/rewigejidexasem.pdf
    • https://cdn.shopify.com/s/files/1/0438/4371/5229/files/7th_grade_springboard_math_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/4857304028.pdf
    • https://cdn.shopify.com/s/files/1/0449/0939/6123/files/68767862412.pdf
    • https://cdn.shopify.com/s/files/1/0437/0048/6312/files/32150350512.pdf
    • https://cdn.shopify.com/s/files/1/0429/2296/7207/files/list_of_classroom_management_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0436/1093/1358/files/30647065563.pdf
    • https://cdn.shopify.com/s/files/1/0430/4843/5861/files/avesta_zoroaster.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009252.bin
67695fcf022f8f00d4a0d80e6e02378c0acabe751097034aaa434bd952140653		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9252 5360 bytes
font_01_sfnt_off0000a475.bin
74ec9569c955ba0994b914b5dbc86af4d414912e53a66aa494c6382a82066dc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA475 10944 bytes

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