Malicious PDF — malware analysis report

Static analysis result for SHA-256 97a65f5a2d64ac23…

MALICIOUS

PDF

43.7 KB Created: 2020-09-06 04:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 3a4410b121e7ced35da1b1c53176b97d SHA-1: 296c28f05ea54f79dbe596e46cbb172ef6c06658 SHA-256: 97a65f5a2d64ac2302eedb31e37e3ec8459a18f785c719b2095b35a7c81ad370
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'video song website for pc'. The presence of many links, including a malicious redirector, suggests an attempt to drive traffic to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/wix?keyword=video+song++website+for+pc In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3765/5191/files/simple_budget_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2447/2471/files/83161210212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/68822299232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0147/8300/files/bharat_song_manikarnika_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/fopodusi.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a7074a_d983c3d5c70947e5bc236d1a323cdf6d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/805d2a_92d41e0da0dc4f6a8e5bf50f2ed0e10b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1d64af_d0dc10d39e4b4c4d95c4ce5957e01d2e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f1c748_420161e465e24073b5e95bf7231a413d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5c139a_ed97045d1dee437aafdbdcd462291354.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/76156b_f535eb7201f84610b6dbfde82a257654.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/db93e9_ad59cd56802445518f780a5038327e81.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_7cd417099fbe43bab6571aadcc5f7d5b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8d57bd_7c6f097a4e65471594d2af3e61b47c35.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4bdc6d_dd07e648efad4811805bd8a3d093d2d7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/822ecd_c312e7f297a3471d830ea0299ff91579.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AED 5276 bytes
SHA-256: b7ecc5879f2bcd456db5645f9a513af50fcecf6e52fa9a3b8a2e4310f651dec2
font_01_sfnt_off00007d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D07 11108 bytes
SHA-256: 4adf71b4e0a31d8caf27911514d283ce63d8e1538def1601120773fddf0e9fd2

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