Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d70b4b5685cf6a…

MALICIOUS

PDF

31.6 KB Created: 2020-10-07 04:58:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f72d6877a983806e14983be21c2d68f6 SHA-1: 92f39c269782a8b279a541003579c70a783eb350 SHA-256: 48d70b4b5685cf6a22fdb4dee41b061f6fe41d2432d2bc8813105cf55322bbd3
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.me, which is disguised as a manual. This indicates an attempt to lure users to a malicious site, likely for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, supporting this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/pify?keyword=ctek+3300+manual+pdf In PDF document text
    • https://site-1039431.mozfiles.com/files/1039431/22796283611.pdfIn PDF document text
    • https://site-1038974.mozfiles.com/files/1038974/pulevopakovukivefixiduxel.pdfIn PDF document text
    • https://site-1039505.mozfiles.com/files/1039505/16715947355.pdfIn PDF document text
    • https://site-1039509.mozfiles.com/files/1039509/rimoxipezodafos.pdfIn PDF document text
    • https://site-1042983.mozfiles.com/files/1042983/79873901002.pdfIn PDF document text
    • https://site-1039675.mozfiles.com/files/1039675/loxofumip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d8c5c3f-3012-443e-bcd7-21371fc0093b/48590394182.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae751eef-113d-4ec1-92b3-15757ebed20d/nefamamewerodubegiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f0e029e-2c80-4e72-b3f0-fd774a58df90/73762455727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0a0a34f-cf3f-474a-9f51-e63a70e27378/94551827828.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3830930-378b-45ea-b7db-4726b9f7e9f8/87404861395.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57ff5f00-8667-4a6b-824b-8f6ba6686257/goxofasobazusuxusuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40ddc3dd-c90e-4d31-bdbe-68f4f3bc2aa6/10997162654.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6030ee1a-f7f2-440f-9836-70da5d642755/xobizegikagabajulofopag.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4009 5188 bytes
SHA-256: e487415af9785595e48961943b82578d03f1832c80c430361596c9db34d456e3
font_01_sfnt_off000051ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51AB 9480 bytes
SHA-256: b45e766cf0754357673bba223c528c0b927ed602d12a96002f6f4e9d02e88426

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