PDF malware analysis — malicious · 0f5ff1aa49413bde

MALICIOUS

PDF

32.3 KB Created: 2020-10-31 00:09:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 30173da5dd146bce292a47869260a9fe SHA-1: b1e6bd5138474ee889fffa0bf61c018d68c785d4 SHA-256: 0f5ff1aa49413bde11015fda8b4dafecddbdb27938d097a4fc691de7b76f15c0

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains an embedded URL that points to a known malicious redirector. This suggests the document is part of a phishing or malware distribution campaign, likely delivered as a spearphishing attachment. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting further analysis of the payload.

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://gettraff.ru/strik?keyword=labeling+plant+parts+worksheet In PDF document text
- https://gutugifowofe.weebly.com/uploads/1/3/1/6/131606479/7483228.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367925/normal_5f8c1e94eeedd.pdfIn PDF document text
- https://tavumake.weebly.com/uploads/1/3/2/7/132740551/fasibob.pdfIn PDF document text
- https://fisizupesaxog.weebly.com/uploads/1/3/1/6/131636899/91da0.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/kitakilesa/que_es_un_arduino.pdfIn PDF document text
- https://s3.amazonaws.com/pazifetanegapu/74892492716.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fd4b4545-62ee-4952-9e54-cea130f29633/demi_lovato_gifts.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0d9a9b45-7a40-44fd-a520-3c92d44fe0bb/logiciel_gratuit_de_simulation_dant.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/9230/2743/files/19539129184.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5c7d8660-1c29-4599-9819-4c73c4ad851b/ragifaziv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/4114/2968/files/nidazulivetomixedudinoru.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_off00004155.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4155	5320 bytes
SHA-256: `a401009b4756415098c415e81c5d020ffa845d47fb5e1a784a2622fdee3cc853`
`font_01_sfnt_off00005376.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5376	9712 bytes
SHA-256: `92a863d3cd155f83fd5b75137c38becfb65148cb517524575d1dba4ef087c99e`

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