Malicious PDF — malware analysis report

Static analysis result for SHA-256 c502bf67d8449add…

MALICIOUS

PDF

49.6 KB Created: 2020-09-07 19:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03cafe0f77968827dd88273e6bfa26ac SHA-1: 369c7692a42c8b82777d353455c34bce3cef8547 SHA-256: c502bf67d8449add59a648b22f6b1caebb046219ddbfd2bd133025d713d52691
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external links, suggesting an SEO poisoning or link farm attack. The primary malicious URL identified is https://ttraff.club/wix?keyword=pdf+b.+sc.+physics+syllabus+of+ignou. While the document body contains garbled text, the presence of numerous links, including one to a known malicious redirector, strongly indicates a malicious intent to lure users to potentially harmful content.

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=pdf+b.+sc.+physics+syllabus+of+ignou
    • https://cdn.shopify.com/s/files/1/0431/4162/8053/files/guludufuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/juzigafugamanedijava.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6556/files/alive_song_sia.pdf
    • https://static.usrfiles.com/ugd/4a6c57_5f3945b8b03f4b2e8e6cb1870a6de418.pdf
    • https://cdn.shopify.com/s/files/1/0459/6973/5847/files/chinese_dictionary_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/ferele.pdf
    • https://cdn.shopify.com/s/files/1/0461/9282/0382/files/how_to_learn_arabic_alphabet.pdf
    • https://cdn.shopify.com/s/files/1/0435/0171/5622/files/achtung_panzer_uwaga_czogi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/97340094815.pdf
    • https://static.usrfiles.com/ugd/ae059d_d18b990c1e3c439b8cfc731d9ac1542e.pdf
    • https://static.usrfiles.com/ugd/345929_d239814e294a4f8c9e18ae69b7666f6c.pdf
    • https://static.usrfiles.com/ugd/e4a001_e61c2cd4795c47e9a8d93a438a33caf0.pdf
    • https://static.usrfiles.com/ugd/314c35_afea3b0fb94d43a3923c63ad8b9e810b.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_off000080c7.bin
0473247616fb8d0f2bc9bc90de79076a04582436b706bf7aa0ef5e3c400939cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80C7 5596 bytes
font_01_sfnt_off000093e3.bin
74d3d8835d934978a5e6ffe9b3217a032e22c2ec84ed0b4670830314b771ccac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93E3 11848 bytes

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