Malicious PDF — malware analysis report

Static analysis result for SHA-256 771f906f3db5e447…

MALICIOUS

PDF

47.0 KB Created: 2020-08-30 06:10:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ee1c303a015f87d84c94a7a9c76952a SHA-1: b6b86e6f8a75f7244b6f2aafb132091bfb3d0895 SHA-256: 771f906f3db5e447b175142867bbb18a5259fa51dae6f8f0404b41f7b6b61bad
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains the URL "https://ttraff.com/wix?keyword=eyesight+driver+assist+review", which is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious content, 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.com/wix?keyword=eyesight+driver+assist+review In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_83b9462286874da28ee99fd604e281d4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f0f6d74d10bc47bdb90ccbb503061549.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0df15e_19785956125947bda107a3bcdc299e15.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/lerunom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7408/5279/files/vikafinuzi.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3849cf880a9d411e869eb4303ccdca74.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d775a9_93826baa63df4423b995434807fb08ec.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_c05975b7ef7d48009a5b7e423293b265.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_8bcd0a0910754205b7599c7901cc42ca.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0dd040_7b457e3a6cb243ccbb5fa150a277ac20.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/efb3f0_88779d7dd61c4f38a0bbafd21d440a62.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b6e37bd912d649e3a84a25b516bfb2cc.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006545.bin
7f638fa8ee1de9f7c0619a79048b2296802b9874165695fea1b6aaf868677971		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6545 5264 bytes
font_01_sfnt_off00007744.bin
ea336188d5c4c833c6e18c915480af3060effccbbad9073f839c17eab4ec48a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7744 10224 bytes
font_02_sfnt_off00009a35.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A35 16092 bytes

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