Malicious PDF — malware analysis report

Static analysis result for SHA-256 433cf964b9287759…

MALICIOUS

PDF

59.0 KB Created: 2020-08-20 18:51:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02e9ba0177de3375c203282eb0ac2921 SHA-1: 6705e8cb2552c7678d19b75a877237e415cdf75a SHA-256: 433cf964b9287759d0887866458a2c8d881a20058174dbbdc9af6c50892ad80d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Tamil employment news paper pdf' and the malicious URL, suggesting a lure for job seekers. The presence of a malicious redirector indicates an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting.

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.cc/pify?keyword=tamil+employment+news+paper+pdf
    • http://nizukeja.rosenetwork.org/uploads/1/3/0/7/130776394/5427ba1da.pdf
    • http://files.lifeindustries.org/uploads/1/3/0/7/130776263/bcb05c2.pdf
    • http://files.ultimatelymeaningful.com/uploads/1/3/2/6/132681993/noxomavojegamo.pdf
    • http://sudobuja.ram-river.com/uploads/1/3/1/3/131398521/pufisirumopijo_rubofalit_nigibisusoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/2020/6758/files/senomixabab.pdf
    • https://cdn.shopify.com/s/files/1/0433/7968/7574/files/8665651584.pdf
    • https://cdn.shopify.com/s/files/1/0440/2338/2166/files/48650949058.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/monthly_calendar_2019_template_australia.pdf
    • https://cdn.shopify.com/s/files/1/0432/8656/0936/files/circulos_armonicos_para_guitarra_acustica.pdf
    • https://cdn.shopify.com/s/files/1/0437/3394/2423/files/tirivug.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4245/files/ground_sheet_for_sale.pdf
    • https://cdn.shopify.com/s/files/1/0456/4742/9799/files/lease_agreement_form_samples.pdf
    • https://cdn.shopify.com/s/files/1/0435/3402/4855/files/materiales_ceramicos_para_la_construccion.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2472/files/mirokoworup.pdf
    • https://cdn.shopify.com/s/files/1/0435/0964/5478/files/kaduzigalis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/prot_warrior_bis.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d6c.bin
d5789444a0f082a502d55f75cce65a508beb22d394d8f6aaadedc8dc3a7fdb70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6C 5332 bytes
font_01_sfnt_off00007f88.bin
dbe6b18b4e7b67183681998b2f936cd2af4757fae5c6d2233f3b0c65e2d9a1c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F88 17232 bytes
font_02_sfnt_off0000a5de.bin
ddf73c5918cc4371ab0a611c8c7f90dbd42b837478e1031e351dc615c5a0e0e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5DE 10220 bytes
font_03_sfnt_off0000c918.bin
ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC918 16092 bytes

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