Malicious PDF — malware analysis report

Static analysis result for SHA-256 84de430b5737445c…

MALICIOUS

PDF

42.3 KB Created: 2020-08-31 07:03:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04a1d4c7b5b793b6437357512fd57d53 SHA-1: 06a2dfb3c60b5d4e3389cf4e338d3a3551f8f1b8 SHA-256: 84de430b5737445cc645aaefff3d92a3cf96370508b25c116f9a27e82f945e70
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, including one pointing to a known malicious redirector. The document body and embedded links suggest a lure related to 'ff14 best friends forever' to drive traffic to malicious infrastructure. The presence of multiple PDF links indicates a link farm strategy, likely to improve SEO for malicious content or to distribute further payloads.

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=ff14+best+friends+forever
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/6613/0593/files/xegagojububo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/curvas_de_calibracion.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6630/files/41788217120.pdf
    • https://static.usrfiles.com/ugd/0a593f_893ccc279d9942d788ae0c55915f9a76.pdf
    • https://static.usrfiles.com/ugd/cf14a4_16fbc76fb5114670b423b449124486f5.pdf
    • https://static.usrfiles.com/ugd/c63dba_ec14e8b874c64594887d1d72ac90124f.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_efaee9d3dc6543c9891f07be9b8c3726.pdf
    • https://static.usrfiles.com/ugd/b8c837_19e7d8f9dffa49db80747831204b553c.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_a3885f83c90c40e6be0e038ac387aa33.pdf
    • https://static.usrfiles.com/ugd/79e5df_4ae3f52c75374949974a71eb7b1eb928.pdf
    • https://static.usrfiles.com/ugd/3826db_d1aaaf8d5d484efd8c087e0868ef5c26.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_off00004f8d.bin
dddc9c92d8d5544c89bff6791716307a23a7cccf926be3e902dd8889db96b3a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F8D 3592 bytes
font_01_sfnt_off00005c5f.bin
8409a8183dca97b3bb3749e5c194f65cc50b82d19449cecccee6085cadf1aafc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5F 4744 bytes
font_02_sfnt_off00006c95.bin
f89de98b4432c69f2d204911b48c3e33b5a79e32742e7384d02c988fd8ae072a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C95 9840 bytes
font_03_sfnt_off00008e46.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E46 4324 bytes

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