Malicious PDF — malware analysis report

Static analysis result for SHA-256 015edd129a152f29…

MALICIOUS

PDF

43.6 KB Created: 2020-09-12 15:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0297aab540ab943831e32f433358c9bd SHA-1: 167a4c85f281948f86f462d25ff28da3bd600564 SHA-256: 015edd129a152f2996aab33c97d87dd67726977fb5c8b69ac0995939e25718ef
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure and potentially malicious domains. The ML classifier strongly indicated maliciousness, and the PDF structure suggests an attempt to lure users to external, untrusted content. The primary malicious URL identified is https://ttraff.link/pify?keyword=materialize+website+templates+free.

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.link/pify?keyword=materialize+website+templates+free
    • http://zimebagow.earthwisdominstitute.org/uploads/1/3/2/8/132816202/f1c9bbfd70.pdf
    • http://kasoru.mmsoul.com/uploads/1/3/2/6/132680835/padebedoneravu.pdf
    • http://files.waveloopart.com/uploads/1/3/2/7/132740343/883d0.pdf
    • http://xetunu.carmonaconsulting.com/uploads/1/3/0/8/130814161/jifiwawajubupovugap.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/4798/4026/files/manual_de_frases_basicas_en_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/lorojizekim.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/zaguworidobetel.pdf
    • https://cdn.shopify.com/s/files/1/0433/2614/4670/files/an_american_tail_full_movie.pdf
    • https://static.usrfiles.com/ugd/6203b9_20ce52dd10324a81ae2f0948a7e10435.pdf
    • https://static.usrfiles.com/ugd/2074c9_7b71b5e4b86849fabf52818a6230cce6.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf6d042501604a5ab710fa21e3333053.pdf
    • https://static.usrfiles.com/ugd/1d64af_46e872ff805d4c20881b4f2f5073e92b.pdf
    • https://static.usrfiles.com/ugd/d6b5da_ca2628c744534e8d80e4dd9a6f0b5dba.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_off00006254.bin
2556a12a85accb20907989e978de3690d7c9d7c463525f5361f5e24a1c6cd7b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 5336 bytes
font_01_sfnt_off0000747a.bin
7f38c7bd3076d5ec567b373f8788658f617417f44aeaffad1c2d563936ecbb0a
pdf-font-stream PDF embedded font (sfnt) at offset 0x747A 2268 bytes
font_02_sfnt_off00007e8a.bin
0fbc3d90786295dc370745d2ae02d1b4d28e54d8fa7a1fd961092617927afb9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8A 10120 bytes