Malicious PDF — malware analysis report

Static analysis result for SHA-256 08289d450dac923a…

MALICIOUS

PDF

45.1 KB Created: 2020-09-04 18:44:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0216596f0081b8371c5ac59cb1068796 SHA-1: d6cfeb8f0a83d2318814cb2dcafa5b16def9b42d SHA-256: 08289d450dac923a529f267950cb0ed3d8324f9e665eaf68b8db20adad348448
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution T1553.005 Security Software Tampering

The PDF contains a link to a known malicious redirector, which is part of a link farm designed to lure users with software crack lures. The document also contains instructions to disable security software, indicating an intent to bypass defenses. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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=vegas+pro+15+full+crack+bagas31
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/e66789_a261411893a44db490856fe75ee66a2c.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_69d89f0f736e467e889238f9fc93ffa8.pdf
    • https://static.usrfiles.com/ugd/b8c837_13904c4f41c241c282d43c591d4faf7b.pdf
    • https://static.usrfiles.com/ugd/b7ab08_050a6bd655224ffba520024751d85ec6.pdf
    • https://static.usrfiles.com/ugd/027f51_d91e0f36209640df80c1edfce36fa821.pdf
    • https://static.usrfiles.com/ugd/23b571_bedfc08faa5a4d29a7c8a0602f9a0c33.pdf
    • https://static.usrfiles.com/ugd/15d534_1dae2f9b9ae1447e98892968d3d5f675.pdf
    • https://cdn.shopify.com/s/files/1/0449/9308/5598/files/kubuzo.pdf
    • https://cdn.shopify.com/s/files/1/0439/3923/3960/files/44174439551.pdf
    • https://cdn.shopify.com/s/files/1/0450/5645/8904/files/23948810356.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/53145588767.pdf
    • https://static.usrfiles.com/ugd/aec2ea_1147735105c44b6d9f40b94a2c328525.pdf
    • https://static.usrfiles.com/ugd/724bd4_00a9c37ee8234f788d7d07d6bb0738f7.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_off00006fd2.bin
e4cf35badb9a05aea53463550ab9a5c02cb474f7c6cbf653d828b93d450f1771		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD2 5692 bytes
font_01_sfnt_off0000835a.bin
bc848cfcc5b950421c12ef1de53962bbc922d7188c31b70248fa53f98589b4fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x835A 10484 bytes

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