Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8aabe5507c39551…

MALICIOUS

PDF

46.8 KB Created: 2020-07-28 08:24:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0dde8444669d4ed6e5595324d24929c SHA-1: c021148f35302dc3ee4d6427be3be1fe3b49f2b4 SHA-256: d8aabe5507c3955176a4ac9f993abe7ce1b27be8181ae86bd86b599685c5643c
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to educational content. The presence of a link farm and a high ML classifier score further indicate 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.
  • 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=atoms+elements+and+compounds+worksheet+ks2
    • http://files.kathrynyancey.com/uploads/1/3/1/4/131409693/wofiwex.pdf
    • http://files.elkdalebaptist.com/uploads/1/3/2/3/132303175/towotazalikulof_fugoximoli.pdf
    • http://files.missdavisluellalions.com/uploads/1/3/0/7/130739401/4dc70e0ef9.pdf
    • https://cdn.shopify.com/s/files/1/0439/2534/0328/files/tabupuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0377/files/48649622354.pdf
    • https://cdn.shopify.com/s/files/1/0435/7285/4939/files/jaronid.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/jutunawovuwimopo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1413/4692/files/sivuvino.pdf
    • https://cdn.shopify.com/s/files/1/0429/4947/6518/files/35392912493.pdf
    • https://cdn.shopify.com/s/files/1/0430/9942/2871/files/15683604163.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/vetadadawaxomonaxakifafu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/bopafarexulofete.pdf
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/86773022156.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/zalizepezadibukubalera.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_off000064a4.bin
5d89aff70c7eae0658608332598dda98e10abe3c6fa9a74f8c81dd616ac8a06b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A4 5424 bytes
font_01_sfnt_off000076f5.bin
47c7319520539888ca145b41edef5f7597f0dac6839a6b43386e5a95b0d0be62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76F5 9884 bytes
font_02_sfnt_off000098dc.bin
ba49a359edda73fb432b2118eee43e8681603f6c6f845ef214af08c3a95321db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98DC 16088 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.