Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd25de6b1c0d48fc…

MALICIOUS

PDF

49.0 KB Created: 2020-09-17 09:20:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa6ead767fc08c945441d7263788d35e SHA-1: 48fbcda64d342b0fbbbde6d48a61f3388d7754b6 SHA-256: dd25de6b1c0d48fc9339c4b472cf500eb5ca5272754435e88babaccc9bf26dd4
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with at least one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=milwaukee+harbor+salmon+fishing
    • https://cd67f580
    • https://4217dfc6-c2b1-4585-a26c-6d4660fb591a.filesusr.com/ugd/de3d83_bf40d178a7c94102b24c6b1a56903ac1.pdf?index=true
    • https://45b6db43-71bd-4db4-a40b-a5774b1e2ddf.filesusr.com/ugd/c63dba_af5a4614b59649748661d911db65ad4c.pdf?index=true
    • https://cd67f580-6a8a-4794-83f8-5cbb2b3d0d6c.filesusr.com/ugd/3f8d85_af4d695030f349e48a46fee7a43cc77e.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/4580/6503/files/pearson_anatomy_and_physiology_lab_manual_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/xilaxitur.pdf
    • https://cdn.shopify.com/s/files/1/0435/5994/4353/files/51340607910.pdf
    • https://cdn.shopify.com/s/files/1/0440/8259/3957/files/descargar_nod32_64_bits.pdf
    • https://cdn.shopify.com/s/files/1/0427/8868/3932/files/physics_51_sjsu.pdf
    • https://cdn.shopify.com/s/files/1/0482/9741/0715/files/nordhoff_high_school_football.pdf
    • https://cdn.shopify.com/s/files/1/0432/4016/1435/files/sunusozokonigelizopomo.pdf
    • https://cdn.shopify.com/s/files/1/0483/8657/2437/files/canon_eos_30d_specs.pdf
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/calligraphy_letters_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/56981615205.pdf
    • https://cdn.shopify.com/s/files/1/0435/9634/9602/files/hypebeast_nyc_shopping_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/2749/6087/files/xasepezed.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_off00008116.bin
fbc7deee4af5bf2f9b17bfba3da3f698d306f753b166fd3c8e100e5421f97c9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8116 5480 bytes
font_01_sfnt_off000093b1.bin
c257e9573d22796d4e3d48d829c4eb46edabb86733e08eb8e1351e0790f26fec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93B1 10360 bytes

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