Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ce20d0c2ab0032…

MALICIOUS

PDF

36.1 KB Created: 2020-09-10 06:39:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9696a236050bd68a1f1e3de88e9c1811 SHA-1: 53c2a30d0d11b959cff5851d2bbb32f8cdacc7b5 SHA-256: 07ce20d0c2ab0032b33659ad7dc12a0297b8c4cb61375c2696a12dae4450bf21
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'sheet music'. The presence of multiple external PDF links, including one to a known malicious redirector, strongly suggests a phishing or scam attempt to direct users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.me/wix?keyword=madoka+magica+connect+sheet+music
    • http://files.brightonbannershop.co.uk/uploads/1/3/2/6/132681951/14595fb2.pdf
    • http://vavarezu.raffaelecassina.com/uploads/1/3/1/0/131071164/b5f6c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0447/7173/7749/files/sociology_11th_class_ncert.pdf
    • https://cdn.shopify.com/s/files/1/0436/9969/9866/files/box_office_report_koimoi_latest.pdf
    • https://cdn.shopify.com/s/files/1/0431/8763/4338/files/rakigakedonelomujovisu.pdf
    • https://static.usrfiles.com/ugd/f90bad_b2777e91a2d34f8ab19a57a577e272af.pdf
    • https://static.usrfiles.com/ugd/98d639_b78ec6e27c4741ebb7eef4aa9a5dea56.pdf
    • https://static.usrfiles.com/ugd/f84671_48ff419c1aa147958bc4be13049f90c2.pdf
    • https://static.usrfiles.com/ugd/0049ca_b0ddc95d7bfe499fbf6defa10d94254e.pdf
    • https://static.usrfiles.com/ugd/f08e01_5a260c7b60614b2f890a17ea4c71d3fe.pdf
    • https://static.usrfiles.com/ugd/c1de29_64736b6a97944d12be166847818d7bd3.pdf
    • https://static.usrfiles.com/ugd/b444d4_f1cd350431b845ea8bc587977563bb99.pdf
    • https://static.usrfiles.com/ugd/bbd3cf_39690dc1980f4f079761b439bb2b8a2d.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000429f.bin
3136d1c9ab9d9006a2b213197c6b3bff1712f691feb289581b7d9d7971e4ce92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x429F 5176 bytes
font_01_sfnt_off00005419.bin
ee291b9c5aa832f31eb26685cd853073fbc7c2b8f2fc6d70fac07ca3a58e4e80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5419 9696 bytes
font_02_sfnt_off00007550.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7550 4324 bytes

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