Malicious PDF — malware analysis report

Static analysis result for SHA-256 15bae92d49a804cf…

MALICIOUS

PDF

42.9 KB Created: 2020-09-19 05:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3319bfd0f6e334ca89a57b2512d6c2d SHA-1: d48575ce5c174cb334d198fc6ccdd05f7af52985 SHA-256: 15bae92d49a804cf385b3eba22ace797789e4086eb105adf948992dd14c1ca0c
162 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, which is a strong indicator of malicious intent. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/wix?keyword=louise+l+hay+heal+your+body+pdf+download', suggesting a lure to download content. The presence of numerous other PDF links further supports the idea that this document is part of a link farm designed to distribute malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=louise+l+hay+heal+your+body+pdf+download
    • http://files.mselliottsreading.com/uploads/1/3/0/8/130874102/3c27d.pdf
    • http://fovojuzal.beaufortvacationrental.com/uploads/1/3/1/4/131438641/e13354b88dd7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://afc242d4-5d25-4186-a6d4-7242391868b7.filesusr.com/ugd/1e32c2_c91e2d528b6a4b5c8c5272e5a36676ef.pdf?index=true
    • https://ff42d01a-59b9-4adb-a82f-14c828d6970f.filesusr.com/ugd/ce77c6_51a75311a06f4db9bc90778c12c65a97.pdf?index=true
    • https://f6f41135-1f76-4ef8-b5be-32a5df1b1a04.filesusr.com/ugd/df4650_a52961ea5e3a466c978013315752f608.pdf?index=true
    • https://6cbede5b-059c-47a1-8c0d-667cf7ee65c8.filesusr.com/ugd/49be48_4cd1d5bfeb8243faa35b6886fbec452f.pdf?index=true
    • https://079ebda4-447b-4b25-a3e7-31f3a6c31fc9.filesusr.com/ugd/113e89_2cdbec9de10f4b8dbd9e5ec5c88da822.pdf?index=true
    • https://00371041-3adc-481c-977b-6ee3ee7057e1.filesusr.com/ugd/5ea691_968fd668d5604eacb00f1779dc1e87bd.pdf?index=true
    • https://af3899f5-5a92-47a8-86f3-755f934d7274.filesusr.com/ugd/5fd5c1_f25a25adac4048c288ade7e446d3f35d.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0435/5666/7541/files/9081971120.pdf
    • https://cdn.shopify.com/s/files/1/0440/8688/6552/files/mutonebugowavunikugel.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006774.bin
62aaafcdcb14e897eca98bfd74d25630527f273fb610cc8f7c00bc9fa188e9b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6774 5404 bytes
font_01_sfnt_off000079e1.bin
a47c5c558349b298c242588427bbd2f24bad59751af7da8af30aa53cdbb936df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79E1 10808 bytes

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