PDF malware analysis — malicious · d2ea545b6e8484f3

MALICIOUS

PDF

42.1 KB Created: 2020-10-12 12:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 65de933c81db322f4187b90bb5509b71 SHA-1: a5a0fa30bf3641449f236ed71aa9850e5ed8e680 SHA-256: d2ea545b6e8484f30983eba03be9a5b4ed8a365f065ff1894da62a9b3e384c80

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.club, which is disguised with a seemingly benign keyword. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URL suggest an attempt to redirect the user to a malicious site, likely for further exploitation or phishing.

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.club/pify?keyword=folic+acid+during+pregnancy+pdf In PDF document text
- https://site-1040528.mozfiles.com/files/1040528/koribevadenovufelubed.pdfIn PDF document text
- https://site-1038788.mozfiles.com/files/1038788/dilemivufotusuxe.pdfIn PDF document text
- https://site-1038784.mozfiles.com/files/1038784/jilikagilukixowowar.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/0f7d3f9e-900e-4ffb-b6de-7921fa07ea89/93766403783.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3fdf1b29-cd13-4d70-8a41-19e43b188a1e/jexowerekifu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1bef8f00-1491-4f41-9140-56eff91cf763/jadimuxujupinatomum.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/886bf615-4432-4663-8a0c-98a7bab83559/sarozapefilixofexemige.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/55051bbf-11aa-4c1c-92b5-c4d3e2698a85/sususufaz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/8776/4898/files/tedeniwo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/8175/3288/files/28188852039.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_off00005ecd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5ECD	5200 bytes
SHA-256: `98a15a3a6d5c08ae78633da7e0a9bcd0e6365f8071aee633f3663dd9cfb43c07`
`font_01_sfnt_off00007095.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7095	13764 bytes
SHA-256: `fe8dd5d6ffd4d60ba43f8e6d9428e3c360590322aadc86c078abfad1668cd3c8`

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