Malicious PDF — malware analysis report

Static analysis result for SHA-256 94eb6a3efc4fa925…

MALICIOUS

PDF

49.3 KB Created: 2020-08-08 04:30:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 596188706333ffd54cb698a0f1522b55 SHA-1: 88f4d3f51e9929682092750418456086795581f3 SHA-256: 94eb6a3efc4fa9254fa9d35cad4af14cafa3d3969286eb058490fe9d442fb81f
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious URL identified is https://ttraff.com/pify?keyword=pelajaran+agama+islam+pdf, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to drive traffic to malicious sites under the guise of providing educational PDFs.

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.com/pify?keyword=pelajaran+agama+islam+pdf
    • http://files.the-syndicate-group.com/uploads/1/3/2/8/132815008/11f7e.pdf
    • http://files.emteches.com/uploads/1/3/2/7/132740580/5715165.pdf
    • http://files.smealliance.org/uploads/1/3/1/4/131407179/zeniko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nujogopuju.pdf
    • https://cdn.shopify.com/s/files/1/0435/5712/6295/files/lezizunetirutug.pdf
    • https://cdn.shopify.com/s/files/1/0434/1396/2919/files/almeida_garrett_cames.pdf
    • https://cdn.shopify.com/s/files/1/0430/8110/5562/files/dynamics_365_for_finance_and_operations_development_cookbook_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87899810879.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/poxusulijupidokubeb.pdf
    • https://cdn.shopify.com/s/files/1/0436/9688/1814/files/sumapi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/29220957338.pdf
    • https://cdn.shopify.com/s/files/1/0435/8576/5535/files/tunadoxaxovedenowo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6719/6063/files/dapodijuxasipinakep.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/89002581555.pdf
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/orespawn_1._7_10_jar.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_off0000628b.bin
f221e8ab061301b745cc0c4578a190b99af80c2d695b9f419a6fc24282ac3ce4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 5036 bytes
font_01_sfnt_off00007384.bin
ef57979336e96217c1da577735dfa976d60649877694a1fde5865978f616267d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7384 9956 bytes
font_02_sfnt_off00009585.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9585 4324 bytes
font_03_sfnt_off0000a386.bin
ae98ce3666097c06947b9b4257d1b618546d962f6daa8b8ffa530209432a153f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA386 5768 bytes

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