Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d6d7578a4ad570…

MALICIOUS

PDF

41.4 KB Created: 2020-08-09 23:00:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f8e507452fcf67e1ebb3697ca3e3d73 SHA-1: 1448d127b397a5fcbad4677d40d4cd22fa2fcc01 SHA-256: 09d6d7578a4ad570f78ac0113ffe52f2371b3cb1c1b82e0377caaa1b186bc717
154 Risk Score

Malware Insights

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

The PDF contains a lure related to a 'Peter Pan bedtime story' and embeds numerous links, including one to a known malicious redirector. The ML classifier strongly indicates maliciousness. The embedded links suggest a link farm or SEO poisoning tactic to distribute malicious content, likely leading to further compromise.

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.com/pify?keyword=peter+pan+bedtime+story+pdf
    • http://files.berksonrealty.com/uploads/1/3/1/8/131872298/4928203.pdf
    • http://files.bishopgumbleton.com/uploads/1/3/1/3/131379371/tokasinipegog.pdf
    • http://files.teacherdallas.com/uploads/1/3/2/6/132681954/woxiwedono.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9938/1157/files/bosogokilufomoxuwirog.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7107/files/abiertamente_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/50277705606.pdf
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/analise_de_dados_luiz_favero.pdf
    • https://cdn.shopify.com/s/files/1/0437/7287/0807/files/91506112041.pdf
    • https://cdn.shopify.com/s/files/1/0432/3183/8368/files/nelson_stud_welding.pdf
    • https://cdn.shopify.com/s/files/1/0434/4234/0007/files/sojisoximobibuwiwezeme.pdf
    • https://cdn.shopify.com/s/files/1/0440/0247/6190/files/wurofaxojobogomibunil.pdf
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/ventajas_y_desventajas_de_las_energias_renovables.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/mipusof.pdf
    • https://cdn.shopify.com/s/files/1/0431/5673/4109/files/57693352587.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_off000064f0.bin
08a9f57427ebe292ae198284edbbd057f3aebd4e7402e9707f99d652b13dacee
pdf-font-stream PDF embedded font (sfnt) at offset 0x64F0 5396 bytes
font_01_sfnt_off00007730.bin
8b99e302538dd8b6f22555a9c10b97d74386e806989f60ebf068c4509c735de8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7730 9984 bytes