Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfd4d320a5fd24fc…

MALICIOUS

PDF

42.0 KB Created: 2020-08-20 06:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88ccd338053d33251e3c0e35637fb3f5 SHA-1: 7c717b4de57690b8f56bd721699614336e810494 SHA-256: cfd4d320a5fd24fc36180f17a49b196209d305209a56342e8bff8ebd76a96ab4
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=iim+kozhikode+placement+report+2015'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous external links, including one to a Shopify domain that hosts another PDF. The primary malicious link likely leads to further malicious content or malware download.

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=iim+kozhikode+placement+report+2015
    • http://files.suzannequigleycopywriter.com/uploads/1/3/0/7/130776745/8400120.pdf
    • http://files.chrissiddallmusic.com/uploads/1/3/1/6/131637853/betitemeziwidusesap.pdf
    • http://vidomaz.saanicharmycadets.ca/uploads/1/3/2/3/132303079/f171440.pdf
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/dugitaxapelorit.pdf
    • https://cdn.shopify.com/s/files/1/0432/6857/1294/files/kobonoraj.pdf
    • https://cdn.shopify.com/s/files/1/0429/0448/6055/files/faithful_victory_worship_chords.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23631451812.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1622/files/xodafawewogoxuxolavimira.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9959/files/pygame_python_3._5.pdf
    • https://cdn.shopify.com/s/files/1/0434/5007/3240/files/starting_out_with_java_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/jamugivefumomumudupoz.pdf
    • https://cdn.shopify.com/s/files/1/0438/2185/8973/files/potitabezatimukoxapej.pdf
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/lajisaxusomozigamanaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/91730448205.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_off00006531.bin
6f736543b4cd2f71afb552bfbb2bfabc953ac9df43d8eadb184c4d5d2710587f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6531 5636 bytes
font_01_sfnt_off0000783d.bin
56ebbf392a76a7e1be365e307b725c40703406f223b9dc6429a9a42d4c848744		 pdf-font-stream PDF embedded font (sfnt) at offset 0x783D 10208 bytes

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