PDF malware analysis — malicious · d2d2f21be96012c3

MALICIOUS

PDF

42.1 KB Created: 2020-10-30 00:48:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: ce98baf071a95f447e7ea9c8e0f015f7 SHA-1: c966c7f926a6838e2c2bb68a6a15adb806c97e36 SHA-256: d2d2f21be96012c327c59ea4cdb382ec04c25ab7d32fb4e7e7ca35d6c1e6695f

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/123?keyword=prissy+sissy+meaning'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL, indicating an attempt to trick the user into navigating to a potentially harmful site.

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.link/123?keyword=prissy+sissy+meaning In PDF document text
- https://cdn-cms.f-static.net/uploads/4384307/normal_5f8e9be022462.pdfIn PDF document text
- https://faxitovi.weebly.com/uploads/1/3/4/3/134379512/68dbbb87ecc.pdfIn PDF document text
- https://farisogu.weebly.com/uploads/1/3/4/3/134307724/a5f9b8ab2f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0505/9448/0293/files/84410115143.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0503/2050/7048/files/fexawamosukewupezanure.pdfIn PDF document text
- https://s3.amazonaws.com/mupukesunobaga/trading_in_the_zone_audible.pdfIn PDF document text
- https://s3.amazonaws.com/takateg/6560890933.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files2/project_administrator_duties_and_responsibilities.pdfIn PDF document text
- https://s3.amazonaws.com/sugowubuf/81290678427.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/8406/9526/files/ruvinovezorajo.pdfIn PDF document text
- https://s3.amazonaws.com/wiwuxot/student_loan_interest_deduction_worksheet_2015.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000065ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65AC	5076 bytes
SHA-256: `4b7cf014364b44b66815a8b1af5a5de00866cc071013e2799e655cb6d7e6c615`
`font_01_sfnt_off000076de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76DE	11028 bytes
SHA-256: `357732ffb0dad9c2131f2f587641339ab25363aa93f1822db772fb4282385623`

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