Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b8b10c00a38878…

MALICIOUS

PDF

38.5 KB Created: 2020-10-30 20:54:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f012c8b5eae1ee562e2daf8a690d55d7 SHA-1: d06c18425dabada67d1ae896ab5c85969ebc7572 SHA-256: 96b8b10c00a388780259bbb437c9e81744f061d10ea8ff0575a430d444c1ff75
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/123?keyword=patti+labelle+rainbow+mac+and+cheese+recipe'. This URL is likely used to deliver a secondary payload or redirect to a phishing page. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.ru/123?keyword=patti+labelle+rainbow+mac+and+cheese+recipe In PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/lowivikena-rusuf-zakaguboto-mozagibol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/8566/0828/files/master_editor_crack_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/wugolovusufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6c334c8-5eea-4c7a-9e0d-69d223c25ddb/ham_bat_dst.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6748/8411/files/free_printable_word_fill_in_puzzles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2566/4666/files/jikugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8189/1484/files/herramientas_manuales_mecanicas_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/upstage_downstage_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9204/8549/files/rofuvosalaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3129/3863/files/garmin_forerunner_620_manual_svenska.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4101/3415/files/drug_metabolism_reactions.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56EA 5544 bytes
SHA-256: c4d8448f0bd59de64188fcb7169d7e681c068c1973661aea0d5c7880c334d331
font_01_sfnt_off000069a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A2 10452 bytes
SHA-256: 20caa04f4fad9566c2f98120ea06484b236ff0320115287003467f914c5a6691