Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f982f222c691775…

MALICIOUS

PDF

103.5 KB Created: 2020-09-08 08:19:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00629554302c09a76fa82e211eefa422 SHA-1: dee5904d3f30fbe073e37b51b4115432175a8619 SHA-256: 0f982f222c691775e791efec26e9cada8e52153dcccc8134915d6bb7ce6652b1
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as an annual report. The PDF also contains a large number of external links, many of which point to user-uploaded content, suggesting a link farm or SEO manipulation tactic. No scripts were extracted, but the presence of a malicious redirector indicates an attempt to lead the user to a malicious site.

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=atlas+holdings+llc+annual+report
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_ed9871661708467aadf8c849b8467d8d.pdf
    • https://static.usrfiles.com/ugd/035627_0a402e1434864f4c93d8be25993137a3.pdf
    • https://static.usrfiles.com/ugd/9734e7_bc7dfe30a9b245eb84470565200d6fdb.pdf
    • https://static.usrfiles.com/ugd/225520_2d065490190840ad86579fd10ec179c8.pdf
    • https://cdn.shopify.com/s/files/1/0429/8371/9071/files/lambeau_field_weather_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/18991982078.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/49518898420.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/jozegujinuzu.pdf
    • https://cdn.shopify.com/s/files/1/0440/2331/6630/files/27433229570.pdf
    • https://cdn.shopify.com/s/files/1/0428/5287/6455/files/76342839913.pdf
    • https://cdn.shopify.com/s/files/1/0436/7328/8869/files/gi_joe_whistle_ringtone_free_download.pdf
    • https://static.usrfiles.com/ugd/3cb6cb_df98935f6fc84f99b525b50a5a8c39ac.pdf
    • https://static.usrfiles.com/ugd/b5973a_e32c970ceada4770953658c0aa756be6.pdf
    • https://static.usrfiles.com/ugd/b8c837_86e99511f69c406393a8b64b56dfe739.pdf
    • https://static.usrfiles.com/ugd/f08e01_dd9b8cb17d7744c28b98310f60f35635.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_cc2bd79f3d984bbbb53d1bd69710ff9e.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_off000143f0.bin
964e6a8117a790f97ecc74da7cfdd53943fe39df151ac8f7409b5c12263f7e5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x143F0 5324 bytes
font_01_sfnt_off00015603.bin
5c1f828f715aa1878551077002ae627732bc9c5214eb9deec8837988ca1940ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15603 10836 bytes
font_02_sfnt_off00017b0a.bin
482b7b4fee51162e6a5d82ff10b0db2f6da6482a74a1be5a66137bb6d850bf40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17B0A 16088 bytes

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