PDF malware analysis — malicious · ecfbdbdd36f6a5d2

MALICIOUS

PDF

39.6 KB Created: 2020-11-07 18:07:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: fd015bcac75dc01a679d5eb2b9a477c2 SHA-1: 41a9cdfee5b3e11a31d72c47504dc84b10eaa798 SHA-256: ecfbdbdd36f6a5d29c4dac331d2a7fb185bd0e4707eb4d5cf29a565564dcce22

66 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
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://traffset.ru/aws?keyword=annotated+bibliography+example+apa+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4401697/normal_5f9714a2bdc28.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4407989/normal_5f96e723cba6c.pdfIn PDF document text
- https://pagejenaxupiwig.weebly.com/uploads/1/3/4/3/134383440/5240121.pdfIn PDF document text
- https://niwurakoj.weebly.com/uploads/1/3/4/5/134588258/debopegutilofik-jofuli-doduwumavogi.pdfIn PDF document text
- https://laxuruvu.weebly.com/uploads/1/3/1/4/131482832/wuwoxop_zelatogib.pdfIn PDF document text
- https://fezojeme.weebly.com/uploads/1/3/4/6/134614855/7572449.pdfIn PDF document text
- https://runebipunozup.weebly.com/uploads/1/3/1/4/131406604/2937030.pdfIn PDF document text
- https://numurivigafezu.weebly.com/uploads/1/3/4/3/134390613/womarikadezik.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://notazit.files.wordpress.com/2020/11/20037331592.pdfIn PDF document text
- https://s3.amazonaws.com/henghuili-files2/91532457696.pdfIn PDF document text
- https://mutozofe.files.wordpress.com/2020/11/67728004733.pdfIn PDF document text
- https://jazimosisek.files.wordpress.com/2020/11/textbook_of_general_surgical_oncology.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_off00005b7d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B7D	5576 bytes
SHA-256: `7a19f6879db7ccef4e9835ec5fd9d767594870dccdddf2f0667009fc73bfcea4`
`font_01_sfnt_off00006e59.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E59	10480 bytes
SHA-256: `ddf433cec2a7d8adad07406a5df4229e5a87bc9296ef1c02e43ef89519a45624`

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