Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde5b9dcf0f65211…

MALICIOUS

PDF

40.6 KB Created: 2020-08-07 15:07:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fef58154989c411601abdfea832d0e12 SHA-1: a758215a6fe81ff25502298f49d6e34786d4476f SHA-256: fde5b9dcf0f652112392a8b37b7782b5ef318200cc1945a8d26f1746509351db
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'personification worksheets for grade 6 pdf' and the malicious URL. This suggests a phishing or scam attempt disguised as educational content, aiming to redirect users to malicious infrastructure.

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=personification+worksheets+for+grade+6+pdf
    • http://files.kenshen.store/uploads/1/3/2/7/132710621/refibam_kutegumaze.pdf
    • http://files.gameart2d.com/uploads/1/3/2/8/132815123/1d8dbe8fd.pdf
    • http://files.lovemehemp.net/uploads/1/3/2/6/132695388/fegevegexu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/53284054210.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/pufarozex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ridikesomuzumiburowafex.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voxetevew.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zafon.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27621352833.pdf
    • https://cdn.shopify.com/s/files/1/0448/6466/7810/files/topology_optimization_theory_methods_and_applications_bendsoe.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/fomuxinobililazudi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3375/4773/files/regional_anatomy_of_upper_limb.pdf
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/rudepizugesusux.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/60703280041.pdf
    • https://cdn.shopify.com/s/files/1/0430/4669/9165/files/ielts_writing_task_band_9.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bofudajix.pdf
    • https://cdn.shopify.com/s/files/1/0432/1017/8717/files/59706569956.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_off00005f47.bin
7088dee0b17cd21a0d00b8b0fe5a930473af46d60a61e6caa3c46f3295ceabe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F47 5696 bytes
font_01_sfnt_off000072c0.bin
17c85e6740fa18f0479b585f70c088a9bba955776afddad246f08e2857cb779e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C0 10024 bytes

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