Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2815d86db8be368…

MALICIOUS

PDF

47.1 KB Created: 2020-08-24 06:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b15acd5ccbfcfabd8ed16fcccae30409 SHA-1: 9f17af1ca965f3336559ff27d02adea0cda02541 SHA-256: b2815d86db8be3684306661bbfaeb8657f3782140b815ee605bc85197d095c4b
150 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 a redirector service (ttraff.cc). This indicates the document is designed to lure users into clicking malicious links, likely leading to further compromise. The ML classifier also strongly flagged this PDF as malicious.

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=diferen%25C3%25A7a+entre+umbanda+e+candombl%25C3%25A9+pdf
    • http://files.catherineodriscoll.com/uploads/1/3/2/7/132741334/aff7707c5f.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/38165173855.pdf
    • https://cdn.shopify.com/s/files/1/0431/0781/1482/files/fikasiledukuxevokewesami.pdf
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/73707922193.pdf
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/30676682096.pdf
    • https://cdn.shopify.com/s/files/1/0435/0921/9492/files/klaudikasio_arteri.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/deficiencia_de_vitamina_a_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/85717759463.pdf
    • https://cdn.shopify.com/s/files/1/0440/3625/9990/files/d_d_3._5_complete_scoundrel.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/jovelezivewexo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/gente_toxica_libro_online.pdf
    • https://cdn.shopify.com/s/files/1/0461/6113/3720/files/5749917827.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/jigirajirop.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6616/files/anti_ragging_form_polytechnic.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000661a.bin
6a455dcaa228ac1341fb5d213ae0767293498afa51d5ef8cf31231210d8ca6a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x661A 5468 bytes
font_01_sfnt_off00007805.bin
72256b2f5a878952c80e08b82ddf0b4e63044877457e973cf6da5c0aacf7b015		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7805 12960 bytes
font_02_sfnt_off00009f1c.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F1C 4324 bytes

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