PDF malware analysis — malicious · 2b3bd3231e9b1c38

MALICIOUS

PDF

50.6 KB Created: 2020-11-03 22:52:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: e41ee73ff15d84adcabe73755ce8d169 SHA-1: 9338f9378ed233ac5c546f3be008e76b944d4a54 SHA-256: 2b3bd3231e9b1c38aea7adf6be56ebcf627d0786e953128f25fdc40b13c1826b

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to a known malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to lure the user into clicking it. The ML classifier also strongly flagged this PDF as malicious.

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/strik?keyword=moultrie+mcg+12589+owner+s+manual In PDF document text
- https://cdn-cms.f-static.net/uploads/4449000/normal_5f9f15acb53a5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381971/normal_5f8bd1b55923a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370285/normal_5f8e43e08b3ae.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366325/normal_5f8761663a9a5.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/levumoduf/7761781887.pdfIn PDF document text
- https://s3.amazonaws.com/lijulijowivaze/vozozunirazefox.pdfIn PDF document text
- https://s3.amazonaws.com/wunupalezozerud/cal_poly_san_luis_obispo_tuition_due_dates.pdfIn PDF document text
- https://s3.amazonaws.com/bidurudilidujug/49022760620.pdfIn PDF document text
- https://s3.amazonaws.com/voxulija/mrs_pacman_unblocked.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/635d3c8b-93dd-4ba9-9520-890fe0b0c602/sutase.pdfIn PDF document text
- https://s3.amazonaws.com/wonoti/30881186516.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_off000082c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82C9	5872 bytes
SHA-256: `bf1737b43766015528e1c63c5eebd274ee57d33ed28c41704bad2109d6fbea9e`
`font_01_sfnt_off000096d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x96D1	11348 bytes
SHA-256: `73cd2f058105a692c56776c06c3e135885683d19041479f83e1899babd4faa0c`

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