Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e81af9fb655bf6…

MALICIOUS

PDF

40.7 KB Created: 2020-08-06 18:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7173624b44e386ae8800028e71405eb6 SHA-1: 162e99e7077fc3937b25b17d9295d227597d0b3d SHA-256: c1e81af9fb655bf6a8da8c045bd62a5e0d02d381827bc0e467008763fb95052a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. The link leads to a URL that is part of a link farm, suggesting a phishing or malware distribution attempt. The document body text and embedded URLs are designed to appear as a benign resource, a common lure for social engineering attacks.

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/wb?keyword=beginners%20guide%20to%20python%20book%20pdf
    • http://ripurij.studiogoddess.com/uploads/1/3/2/6/132695569/3048033.pdf
    • http://files.lisaroosart.com/uploads/1/3/1/1/131163740/sikedirut-befuzozif.pdf
    • http://mujavub.knozeythetraveler.com/uploads/1/3/1/0/131070152/8039057.pdf
    • http://files.ieatoutloud.com/uploads/1/3/1/1/131163914/2407339.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/36966407008.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/koxuligedadidapaxaxesasos.pdf
    • https://cdn.shopify.com/s/files/1/0428/4314/4359/files/nazowuxoxag.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/sogobuporuzidonipekidevip.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/sexubezagamajekiketorukaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/mumiwipulos.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2859/files/tuvedoforazekedijipikino.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/48878241622.pdf
    • https://cdn.shopify.com/s/files/1/0432/4150/4927/files/muscle_mass_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0428/4098/1670/files/76474522409.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vibamiwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/38055118478.pdf
    • https://cdn.shopify.com/s/files/1/0437/3273/0008/files/bazomoz.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_off00006121.bin
84dc6792d2f521c49b5815a1b4a45457abee21efc462405cf5932d5ffde69301		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6121 5416 bytes
font_01_sfnt_off00007391.bin
b267ef46cada9616b27b24353904072308209bb38c4352625e3bceba80535e0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7391 10024 bytes

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