Malicious PDF — malware analysis report

Static analysis result for SHA-256 0190fa37152e7fe5…

MALICIOUS

PDF

43.5 KB Created: 2020-08-29 10:02:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bcbb3ddba100a196e8a7e4485106d76 SHA-1: ce58a89afc6330c1d731593af826e88ae3b2924c SHA-256: 0190fa37152e7fe51c5ecb5de02eb36dee9bc53b5a48a98616a2ce60e6ea9db7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

This PDF document contains a mass of external links, with one identified as a known malicious redirector. The primary malicious link is https://ttraff.cc/wix?keyword=familiar+guide+mod+1.7.10, which likely serves as a gateway to a phishing or malware distribution site. The document's structure and embedded links strongly suggest a social engineering attack aimed at luring users to malicious content.

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/wix?keyword=familiar+guide+mod+1.7.10
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_03c4e1483542468bb670d192ab0e152f.pdf
    • https://static.usrfiles.com/ugd/b8c837_90469ef81c544b36abbc2934d9dec548.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee120fd98fea4c1da7afcf5103e9b56c.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9f50d2292234b079bdbdb4c590e9213.pdf
    • https://static.usrfiles.com/ugd/b8c837_8aa41ffa18ba4e1197b953e9ff1370bf.pdf
    • https://static.usrfiles.com/ugd/b8c837_16b52d1e7e444b0396e282047c1fca6e.pdf
    • https://static.usrfiles.com/ugd/b8c837_30fd54937558457bb69c065553ce4808.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d2de1530d9a40f7a8d9d9c9c6652491.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d8aeab58a7e490489116315b8d5506d.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd0d0913464c447e8d33514485477726.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba1e786e43e04857b650d89becbf6bf7.pdf
    • https://static.usrfiles.com/ugd/b8c837_409c019efa9f4aa28a7a617c0d06b294.pdf
    • https://static.usrfiles.com/ugd/b8c837_67e7acd4ca64447d8afb699521dc813a.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005812.bin
adc51e1798aa16602fa2d6af5edce01c1429f5044a2898efcf135180d923e997		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5812 5228 bytes
font_01_sfnt_off000069cc.bin
48ed56a66af842a9f1657e24d33feec105ade8b37c3d442e4d9d18831b931b12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69CC 10084 bytes
font_02_sfnt_off00008ca1.bin
b2cf57f29eb3b5e0c174876c58b70ef8fadd81916e6e05a17acc225f9629e7e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA1 16064 bytes

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