PDF malware analysis — malicious · 531c1c92f0124367

MALICIOUS

PDF

46.9 KB Created: 2020-10-25 23:26:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 423310f0f0f0c93edcca7849d1023d70 SHA-1: 7545eec7938b83554d66ef003bc189a2545fcd6c SHA-256: 531c1c92f01243671811ddeadaa5672e7142d0b77cf5cef82420c23d7722b86c

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links and text referencing 'Marvel contest of champions hack apk mod', directly luring users to a malicious URL. The ML classifier strongly indicated maliciousness, and the PDF was flagged for linking to known malicious redirector infrastructure. The document body, though partially corrupted, contains the malicious URL and other PDF links, suggesting a link farm or phishing attempt.

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/123?keyword=marvel+contest+of+champions+hack+apk+mod In PDF document text
- https://cdn-cms.f-static.net/uploads/4365536/normal_5f8708e40b4ec.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374984/normal_5f8ee936a300b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372105/normal_5f8936724fcbf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375353/normal_5f8f755fcb052.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381737/normal_5f8fd01c9042d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387060/normal_5f9582fb8c506.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378406/normal_5f8a9613a2c7a.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/a857ef64-daf3-4a02-965d-5d18de222978/venogivakabolun.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fcc3affb-e4d3-4a46-b3cd-c4d0f28cc4a2/polynomial_long_division_worksheet_with_answers.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bf51cdcb-d115-4408-8cea-0dd43a34f170/89845996869.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1870fec9-88ce-42e5-bdd0-e77d52bc5dde/xojutowajo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/58c23a80-eff0-4dbe-a30a-3b3eddeef85a/14212813515.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/61e7c691-6b21-4a87-9888-cc197d0dad69/rakomejipebomosafugedejom.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a2862af6-d8c2-428d-a6d6-78e3f802c72b/29406214911.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/3258/3578/files/6430174110.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4735/2485/files/26206224709.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/4942/6339/files/1999_bayliner_ciera_2855_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3948/2275/files/71587536745.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/4719/3238/files/28931189113.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/4346/2561/files/76421367116.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/5327/1208/files/39378372326.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9074/6271/files/curso_ingenieria_de_software.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006a92.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A92	5312 bytes
SHA-256: `5f296f1d8d849f1f46bba53c918af6a29865ab3a3e18e659682e05f010901681`
`font_01_sfnt_off00007c75.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C75	10300 bytes
SHA-256: `edd6c47a9db1b8b2c353b6d87ab4cd90827bd149ea10041afab38ca2f72082b6`
`font_02_sfnt_off00009fdd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9FDD	4324 bytes
SHA-256: `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`

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