Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e937a8484620d30…

MALICIOUS

PDF

49.3 KB Created: 2020-09-11 00:49:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ccd1a9a36e2fbba4fd0a05c8e54c14f SHA-1: eff021f1364a9b9b7aed20eb60c2367ece95baaa SHA-256: 5e937a8484620d30be87301f09e7de3841e19451c9345a1772a448ea76616243
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.me/wix?keyword=revista+natura+setembro+2019+pdf`. This URL is presented within the document body, disguised as a search result for a magazine PDF. The document also contains a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the presence of embedded URLs and the malicious redirector strongly indicate an attempt to lead the user to malicious infrastructure, likely for further exploitation or phishing.

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.me/wix?keyword=revista+natura+setembro+2019+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/0047a4_4391aa8abb7844d9a737909e50712eb7.pdf
    • https://static.usrfiles.com/ugd/031dda_561b13b02bbd4d628b059a8e3866990e.pdf
    • https://static.usrfiles.com/ugd/6a7407_27c69e79d99249c1b898e9406a7cb8c6.pdf
    • https://static.usrfiles.com/ugd/d17951_8c6d457d3cff453aa7fe0740951a89d0.pdf
    • https://static.usrfiles.com/ugd/d13e1f_5f4bf78e6c2b4f9b8761fe73423eb718.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.pdf
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/microtech_halo_v.pdf
    • https://static.usrfiles.com/ugd/fafc38_88111ac9963d4dad860051442d385207.pdf
    • https://static.usrfiles.com/ugd/8716ab_b942761b52e24b628c9270471447ad02.pdf
    • https://static.usrfiles.com/ugd/c83fdb_8a4afd7202064f6381107e4572e1007c.pdf
    • https://static.usrfiles.com/ugd/d7d6cd_02ca4d515e304eb7a7c8f7d4e13c4d61.pdf
    • https://static.usrfiles.com/ugd/6c032c_bf431dbe01b842f788b7380ca86eebc9.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055e3.bin
76418ba4bc0e023d3d7afb0c71f17d2848fed06737af5242c6c4fe92c7c2479f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55E3 5728 bytes
font_01_sfnt_off00006945.bin
e84a161d8c887b24f4863305c9db69a84e143bf0c9b1003c8f10123819c84167		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6945 13672 bytes
font_02_sfnt_off0000954a.bin
df1d2c903cabdf2976887e260da0b25217edeb5ce2b71f315001024534e8e210		 pdf-font-stream PDF embedded font (sfnt) at offset 0x954A 16060 bytes
font_03_sfnt_off0000a9e0.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9E0 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.