Malicious PDF — malware analysis report

Static analysis result for SHA-256 10e2d72714431b51…

MALICIOUS

PDF

44.8 KB Created: 2020-08-29 06:10:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 449515f07e41829b9c4e878145f92f3f SHA-1: 5f82cb0e008c613d46500052548bdcd7ed3675c2 SHA-256: 10e2d72714431b51a7b419cbe9945727067450e28eb99f8b5c75f134243b78db
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to contain a lure related to downloading a movie. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or redirection attempt.

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/wix?keyword=final+destination+2+full+movie+download+in+hindi+300mb
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_2144100e9be34a09ba9a82ea531e3fca.pdf
    • https://static.usrfiles.com/ugd/b8c837_1919cd1ee40e4ea898b0d72a85fc1fbc.pdf
    • https://static.usrfiles.com/ugd/b8c837_432cfe9ff0eb48fca92d68034e3bf6a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_8b7f2b0c200b401ea62610955f037079.pdf
    • https://static.usrfiles.com/ugd/b8c837_b591ec52d39a4c9f9a80b3a5797639c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c41bea29aba489cbd092bdc608078f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_5cdb85e260694944968d6c7e18b42741.pdf
    • https://cdn.shopify.com/s/files/1/0436/1555/1645/files/aviation_logo_templates.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/23268126975.pdf
    • https://cdn.shopify.com/s/files/1/0431/8494/7357/files/nukeba.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/jntuk_previous_question_papers_r16_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0440/2823/1830/files/17393420586.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/65615035150.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_off000061b8.bin
e8ba024bc15dc154c1f4b6ee2c1269f23943bee749541cc0f3c898e37030fd8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61B8 5620 bytes
font_01_sfnt_off000074b2.bin
2618cc154df831871d51c2cb90cf25a38c6f5cb83a358c577f646f5c2d9bdc5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B2 10292 bytes
font_02_sfnt_off00009800.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9800 4324 bytes

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