Malicious PDF — malware analysis report

Static analysis result for SHA-256 14bbab2449d57453…

MALICIOUS

PDF

71.1 KB Created: 2020-12-27 08:22:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5b6f29b72c03d998c392ef96e361893 SHA-1: 7f66c655e768061f9224d8967481348d9ad7a08c SHA-256: 14bbab2449d5745399c2cfc705b3dd013257fa5d8882e20760ce6db3b4c0ed4f
214 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a critical ClamAV detection for Pdf.Phishing.Trojan. The embedded URL 'https://gettraff.ru/aws?utm_term=abcd+movie+all+video+song' is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest an attempt to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/aws?utm_term=abcd+movie+all+video+song
    • https://cdn-cms.f-static.net/uploads/4447263/normal_5fc3692a00a28.pdf
    • https://static.s123-cdn-static.com/uploads/4470961/normal_5fe3e104e2ba7.pdf
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/1949415.pdf
    • https://wibagubid.weebly.com/uploads/1/3/4/3/134373733/7275598.pdf
    • https://wulafuxuzezam.weebly.com/uploads/1/3/2/3/132302924/vuxufuropiweja.pdf
    • https://ramageputa.weebly.com/uploads/1/3/1/6/131637054/7103278.pdf
    • https://cdn-cms.f-static.net/uploads/4427523/normal_5fd18d183a400.pdf
    • https://cdn.sqhk.co/vuzonabudad/yp7mie5/ping_pong_table_for_sale_used.pdf
    • https://gesinanafu.weebly.com/uploads/1/3/4/4/134481382/6be32b876cc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jasadavebaga/dog_on_guard_toomics.pdf
    • https://s3.amazonaws.com/genedesowul/hemoglobina_fetal_anemia_falciforme.pdf
    • https://s3.amazonaws.com/boduxatavepe/apkpure_apk_app_downloader_for_android.pdf
    • https://s3.amazonaws.com/forupokisip/34481452965.pdf
    • https://s3.amazonaws.com/xukanomarexumu/aprender_portugues_1.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7d2.bin
5808f53d145a595cb6f9625f55c394328578c1cb370b20dc2d9d33736f9253de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D2 5352 bytes
font_01_sfnt_off0000e9f5.bin
ed79ada70e8179abb7cd3f166c61b48632d82bce04695d1bcc0c2479d6991685		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F5 11072 bytes

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