Malicious PDF — malware analysis report

Static analysis result for SHA-256 09fa670ce67da0dc…

MALICIOUS

PDF

41.9 KB Created: 2020-07-31 21:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa7839bfbf26ea5098d7a4f6f4b3f679 SHA-1: 64708aaf81d12637133618dbc40ec1f64878bc81 SHA-256: 09fa670ce67da0dce0134e02fb9cbf2c8d182340e4d1657ce68dcc7b6ec0a30a
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic suggests the document is part of a link farm, likely to distribute malicious content or phish users. The embedded URL 'https://ttraff.cc/pify?keyword=lights+retention+scale' is a primary indicator of this malicious redirection. The document body, though heavily obfuscated, contains references to the same URL and appears to be a lure.

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.cc/pify?keyword=lights+retention+scale
    • http://files.pamelasouthern.com/uploads/1/3/0/7/130775125/wefonigavilefin_zitibimejufe_dabalo.pdf
    • http://files.edgeofthewilderness.org/uploads/1/3/0/7/130775304/ruwefe-jinir-rofisoligejeb.pdf
    • http://files.carolynfordart.com/uploads/1/3/1/3/131398573/3e8ad08b85a5e9.pdf
    • http://files.clevelandvoiceandsleep.com/uploads/1/3/0/9/130969944/3915040.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/29155155610.pdf
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/mivedaxewowazagabar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37604868145.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2564/files/fiwegox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57355052908.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/16432683387.pdf
    • https://cdn.shopify.com/s/files/1/0431/5391/6060/files/fuzukenesuwagixofekuzisuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/mufibabozegiw.pdf
    • https://cdn.shopify.com/s/files/1/0440/6660/3158/files/12421569762.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/futazufupisigizev.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/biporavijuze.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/bonepuzenubaxi.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_off00006709.bin
ba0cab89221a75fa7a11d9fd3cfce4dcb568d893ca04a8460ee3021937dc8969		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6709 5000 bytes
font_01_sfnt_off0000780e.bin
582c6aeda4c750ab634f3c8fd237afc17cd8d52e95e0bd1fa25b0799959d1c7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x780E 10364 bytes

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