Malicious PDF — malware analysis report

Static analysis result for SHA-256 769703f65341ac46…

MALICIOUS

PDF

71.2 KB Created: 2020-08-21 04:02:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99c104bd104a1208b0026f7438086702 SHA-1: ee15a2b2db167f9d4ebe0bee4153569334a4967d SHA-256: 769703f65341ac460435ab9258314702e513e8fec67a0a5f576195406a8957b0
162 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a known malicious domain, ttraff.com, with a keyword suggesting a lure for free iOS apps. The presence of a 'download button' heuristic further supports a social engineering attempt. While no scripts were extracted, the PDF structure and embedded URLs strongly indicate a phishing or redirection attack.

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.com/pify?keyword=ios+7.+2.+1+apps+free
    • http://files.farmingtonavenuebaptist.org/uploads/1/3/1/8/131871414/5669621.pdf
    • http://files.solsticevocalarts.com/uploads/1/3/0/7/130775280/11e460bd60.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/8705/3475/files/4523357543.pdf
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/62889257697.pdf
    • https://cdn.shopify.com/s/files/1/0428/8842/9724/files/ramadan_calendar_2020_saudi_arabia_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/6123/9192/files/presentation_rubric_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/5409/4743/files/learning_with_exceptionalities.pdf
    • https://cdn.shopify.com/s/files/1/0431/5784/8224/files/pevowakopaduloten.pdf
    • https://cdn.shopify.com/s/files/1/0459/9942/3647/files/consumer_reports_power_washers_2017.pdf
    • https://cdn.shopify.com/s/files/1/0440/8072/6168/files/logadajogomuvalitekiloj.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/2000/files/xurorureloto.pdf
    • https://cdn.shopify.com/s/files/1/0439/9392/3742/files/composition_and_inverses_of_functions_worksheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd11.bin
bbfe80f61d244a6ea6eaa4d3408cf6572a780f784c1c3502a04c72436a1f91fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD11 4652 bytes
font_01_sfnt_off0000dcf2.bin
aee33429f637c5331a3a9e0e5183250dbd840587a15be8bc4e7493beb556dde7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF2 10860 bytes
font_02_sfnt_off000101f9.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101F9 4324 bytes

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