Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cfa50c943cfbb7b…

MALICIOUS

PDF

45.7 KB Created: 2020-08-16 20:39:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 062370a0f8154ad49bfa0d7427db5911 SHA-1: 63c1ded3882891d3d73344a3d58325468c365c76 SHA-256: 2cfa50c943cfbb7ba79be964e46af5ffca221c036f9015fc5ef41dacc61192d8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the text 'Agenda 2019 en pdf para imprimir' and the malicious URL 'https://ttraff.cc/pify?keyword=agenda+2019+en+pdf+para+imprimir'. This suggests a phishing attempt where the user is tricked into downloading or viewing a document that leads to a malicious site.

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=agenda+2019+en+pdf+para+imprimir
    • http://files.nscecommerce.com/uploads/1/3/1/6/131607075/1733573.pdf
    • https://cdn.shopify.com/s/files/1/0436/4953/2057/files/ang_abakada.pdf
    • https://cdn.shopify.com/s/files/1/0429/0448/6055/files/sri_devi_bhagavatam_telugu_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8560/2721/files/7827270652.pdf
    • https://cdn.shopify.com/s/files/1/0434/2608/7064/files/japapazo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2157/4049/files/manumisojejojebemapute.pdf
    • https://cdn.shopify.com/s/files/1/0428/3174/1095/files/barefoot_investor_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/69857338917.pdf
    • https://cdn.shopify.com/s/files/1/0430/1966/5561/files/peduganitepezujizemutenu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3847/4397/files/99694324401.pdf
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/mumusexulovi.pdf
    • https://cdn.shopify.com/s/files/1/0440/5107/1126/files/first_aid_treatment_for_burns.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/40891111741.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_off00006901.bin
55cabeecd39c8e377225730222a67718a0dfbc62d3400ad700f97ba1ad9919ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6901 5620 bytes
font_01_sfnt_off00007c0f.bin
ad5dd1f1e9c50d6eb54bbe38716510d1c5f2db58604da78427e514f27fc44b2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0F 14524 bytes

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