Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a333783045a4192…

MALICIOUS

PDF

49.3 KB Created: 2020-08-20 01:00:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0312c01421c827e5f0cb6460e22e4278 SHA-1: b3ddcf352b07b3270a3bf7dc9bf95110ab700f45 SHA-256: 1a333783045a419216c38909a0530af832a3ee0c6fa6a55ee45d350da678db08
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify-hosted PDFs, designed to appear as legitimate educational resources. The primary link, however, leads to a known malicious redirector at 'ttraff.com'. This suggests a phishing or scam campaign aiming to direct users to malicious content under the guise of educational material. No scripts were extracted from this sample.

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.com/pify?keyword=maths+genie+forming+and+solving+equations+answers
    • http://files.thekravmagaeducator.com/uploads/1/3/1/1/131164100/973005.pdf
    • http://gogobov.misneraudioprograms.com/uploads/1/3/1/6/131637047/nonotat.pdf
    • http://files.goodztingboutique.com/uploads/1/3/1/6/131636825/zevarusazal.pdf
    • https://cdn.shopify.com/s/files/1/0429/2096/8358/files/cambridge_primary_science_stage_4_learner_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/4532/9832/files/bombastic_words_with_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0429/5252/3929/files/78448545374.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8285/files/29183394491.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/que_es_asepsia_y_antisepsia_en_enfermeria.pdf
    • https://cdn.shopify.com/s/files/1/0429/0464/9884/files/38615008812.pdf
    • https://cdn.shopify.com/s/files/1/0434/0298/5622/files/95900250670.pdf
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/69817085529.pdf
    • https://cdn.shopify.com/s/files/1/0428/4760/0807/files/69407574963.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_off000077d5.bin
471d461c1450474cf92cdf0f6e9eb31d1fae680d51bc59ac3d221695b5edb69e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D5 5604 bytes
font_01_sfnt_off00008aca.bin
9c7df1ff4aa91ff0cc79d549dddbfd4c23ffaa6a84880f814948cebae1fe960d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACA 14648 bytes

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