Malicious PDF — malware analysis report

Static analysis result for SHA-256 679e4983148d64b5…

MALICIOUS

PDF

43.5 KB Created: 2020-08-03 00:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9253678e021bc38ed8837be1fdeeca4 SHA-1: c4043d78b5c1a6b6239663de628f4288c8738cbe SHA-256: 679e4983148d64b562648e5def393963efb2dc78953c7f1bdde943ed73ae377d
154 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a link farm designed to manipulate search engine results. One prominent link, "https://ttraff.cc/pify?keyword=eshop+codes+no+surveys", is identified as a malicious redirector. The document's structure and the presence of a malicious redirector suggest an attempt to lure users to malicious websites, likely for phishing or malware distribution.

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=eshop+codes+no+surveys
    • http://files.quantumpoint.org/uploads/1/3/0/8/130874031/fexurugomaseba_livorejalolokib_kuluvewowa.pdf
    • http://files.6224marketing.com/uploads/1/3/0/7/130739537/0aec5ee.pdf
    • http://files.scottishyouthballetgrandprix.com/uploads/1/3/1/4/131437984/801033.pdf
    • http://files.kierstenparsons.com/uploads/1/3/1/1/131164472/kaxetumeluribigumesi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/40890654940.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0859/files/dd_form_626.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31995481059.pdf
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/rafigawemuzi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1268/4967/files/jateketi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7922/8833/files/human_biology_mader_14th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3978/5111/files/risazulomokupukodedonuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6072/3865/files/mesitoguwomip.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/40952316994.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/geresomajefidosutisobatut.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1065/files/79502062531.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_off00005f7f.bin
1bea47ea154c0d6666541388ab5d411b61e6cb386be1b8c74acb3f9b1923eb26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7F 4792 bytes
font_01_sfnt_off00006fb8.bin
d0f3e21523eeebf932a167312deb34c31b4b1048652ad9d43212f78011d2c6f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB8 10392 bytes
font_02_sfnt_off00009340.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9340 4324 bytes

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