Malicious PDF — malware analysis report

Static analysis result for SHA-256 708b1f9650f64fff…

MALICIOUS

PDF

68.6 KB Created: 2020-09-01 03:18:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24e35a5b82b61fa632a2ab6aa4883e68 SHA-1: 68b3d373e4e5ba514b993bbbb2532961c0aeb744 SHA-256: 708b1f9650f64fffd71ebeeeaa147850f469eaeaa9547696bdd1bf35fde56788
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. The primary malicious URL, 'https://ttraff.cc/pify?keyword=rpg+maker+mv', is flagged as a malicious redirector. While no scripts were directly extracted, the structure and embedded links suggest an attempt to direct users to malicious content, likely for phishing or malware delivery.

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.cc/pify?keyword=rpg+maker+mv
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/aef5b7_c250ae47a2d64a02bf31b7025d1f8173.pdf
    • https://static.usrfiles.com/ugd/6a7407_b3d9d1eead6b4dbb9522346d2a11cb7d.pdf
    • https://static.usrfiles.com/ugd/9e41f0_656348b38cd144b591d2d20bbcc3e788.pdf
    • https://static.usrfiles.com/ugd/4f270c_9b29df7d84d541eaa90b58d1c8236058.pdf
    • https://static.usrfiles.com/ugd/7603ae_65f2f420d8c44d868557b4c06c6214f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e6a3929249e468a8f60bc57758d863e.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_91d70f36158646fe8d66091b2da68183.pdf
    • https://static.usrfiles.com/ugd/9734e7_5f51375ea6f342ac91f765306462ae05.pdf
    • https://static.usrfiles.com/ugd/b8c837_c5930ba9077549a3acf0e01332163243.pdf
    • https://static.usrfiles.com/ugd/3de8a6_600270994563489eb71f247b73044d12.pdf
    • https://static.usrfiles.com/ugd/6290de_9ad3f8b11db545d1a924e55b6d1af595.pdf
    • https://static.usrfiles.com/ugd/73f3b0_59213a36c00847ee8c844168e1076103.pdf
    • https://static.usrfiles.com/ugd/79e0dc_dfbfbe3c4b7146de9b0d4433da24e20c.pdf
    • https://static.usrfiles.com/ugd/08fe48_6188db9cfeac46b6a221e80587029522.pdf
    • https://static.usrfiles.com/ugd/ca32a8_8418c428bc6a46c8aead26d66a252321.pdf
    • https://static.usrfiles.com/ugd/e5cbe5_fceb5e421e9b42e1bc1e5ef4c60dbe1c.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a11b.bin
0263cba4e0938fb5750993553b991c3851388e7ac10a112ebcbaf76cebf51516		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA11B 10412 bytes
font_01_sfnt_off0000c3b2.bin
b2ff6f73643a30c522a9a2490ce684a50c2527719164aaa07d7dfb808160e137		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B2 4504 bytes
font_02_sfnt_off0000d2fc.bin
02f32937161e3c04e05be0a70d79c45dbe865cf48cc68830b8a9624f454b4e3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FC 10616 bytes
font_03_sfnt_off0000f6fa.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FA 4324 bytes

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