Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bb710fae8fb36ed…

MALICIOUS

PDF

41.8 KB Created: 2020-08-08 04:02:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0231ce02c362eaebc04dbd70bbdf0807 SHA-1: f3b418b036e19598366f6f6daf4db4fbf97eec7b SHA-256: 4bb710fae8fb36ed0f90466a9229bdcc5a1b2e2e230c158046004bed8fc2c7f9
150 Risk Score

Malware Insights

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

The PDF contains a lure related to 'Alessandra rampolla libros pdf' and embeds numerous links, including a critical redirector link to 'ttraff.com'. This suggests a phishing or scam attempt designed to lead users to malicious content. The ML classifier strongly supports the malicious verdict.

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=alessandra+rampolla+libros+pdf
    • http://files.buzzaldrinstem.com/uploads/1/3/0/7/130776350/4219890.pdf
    • http://files.christiestimber.com/uploads/1/3/2/3/132302815/a80bec9c772bc.pdf
    • http://files.arcfinearts-sf.com/uploads/1/3/1/6/131636841/jeparumokadoxox-fekib.pdf
    • http://gudif.lovenutes.com/uploads/1/3/1/0/131069899/fitezemizidu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/fojetebe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/nodax.pdf
    • https://cdn.shopify.com/s/files/1/0441/0828/4056/files/ccsk_certification_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/mefegosukeno.pdf
    • https://cdn.shopify.com/s/files/1/0433/4839/4143/files/pibegolirida.pdf
    • https://cdn.shopify.com/s/files/1/0434/4184/8470/files/15309651388.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/abstraction_in_java_with_example_programs.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/66434903074.pdf
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/begimavurebivuriluwe.pdf
    • https://cdn.shopify.com/s/files/1/0437/9652/9313/files/anemia_sideroblastica_hereditaria.pdf
    • https://cdn.shopify.com/s/files/1/0439/3716/9576/files/64117793755.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_off00006409.bin
5301d58b62444a2aaaaf49c4a9b301fd86141dfce8ab579ecb4e9a3c79ba8091		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6409 5316 bytes
font_01_sfnt_off000075fd.bin
dc75cc977badd321d20508d2bae891069af8b08a0fdc36cdb4cc9c43e616eb4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75FD 10496 bytes

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