PDF malware analysis — malicious · 14b14c0ab055c86d

MALICIOUS

PDF

39.6 KB Created: 2020-11-01 03:23:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26

MD5: 13b8485812caa954907b474aa9d2de83 SHA-1: 3b81b445924cc626453744d2fdd6940078f3c002 SHA-256: 14b14c0ab055c86d01fecd076ffb447bb529238b6f0df3da6046691f1976e2d2

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://cctraff.ru/aws?keyword=electoral+college+activity'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded link is the primary indicator of malicious intent, likely designed to lure the user to a compromised 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://cctraff.ru/aws?keyword=electoral+college+activity In PDF document text
- https://rizulibix.weebly.com/uploads/1/3/4/3/134358491/a76cb.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/1/0434/0439/4646/files/xakiladalodovexoxalolusag.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/5555579623.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/152a09c2-3e3e-4d37-a895-a1e9caa03fcc/jufowizus.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9e993fc7-cf6d-4c56-bd27-b16a5cbb72fb/16828414557.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/3286/9525/files/dakafafatebomimazazelud.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2dcf5d0b-ee37-40f6-b035-b6681295e827/remove_duplicates_in_google_sheets_column.pdfIn PDF document text
- https://s3.amazonaws.com/zewimu/nosopezonakuwegolifekuxaz.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e9faad9d-7b5f-4168-a95e-68e723464009/htc_rhyme_software_update.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_off00005d63.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D63	4908 bytes
SHA-256: `94a5cf988af3e4f46aa7270eaf5bd8ad4084fc160df9621f412edb7021f6649e`
`font_01_sfnt_off00006e37.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E37	10548 bytes
SHA-256: `757b284ec1045ca0f6f70b02a1253568f0cbe0fdb8e976c0b8de5eabf4227222`

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