PDF malware analysis — malicious · ccfec895f07e82c2

MALICIOUS

PDF

40.5 KB Created: 2020-11-08 21:19:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 00216e2738a0426e4665e2354444e5d2 SHA-1: 33b73c4cf2e088d7b116fb3b439fed72aa3943a8 SHA-256: ccfec895f07e82c23cd583fe90f6a7802553ac4d18904a8eaf3208dc81763a4c

126 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
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=section+1+cell+theory+study+guide+answer+key PDF link annotation
- https://geguguxe.weebly.com/uploads/1/3/4/5/134513061/bad03.pdfIn PDF document text
- https://bumatiwake.weebly.com/uploads/1/3/4/0/134096698/3366256.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389568/normal_5f9168c762ea5.pdfIn PDF document text
- https://sufewusog.weebly.com/uploads/1/3/4/6/134644796/650fccfc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375358/normal_5f97507c81808.pdfIn PDF document text
- https://pirowefe.weebly.com/uploads/1/3/4/4/134444143/639543c.pdfIn PDF document text
- https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/jopititamazisag.pdfIn PDF document text
- https://xisuviwilizej.weebly.com/uploads/1/3/4/3/134320176/migikodubisifo.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/jozetej/kokogarito.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_off00005f34.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F34	5616 bytes
SHA-256: `e8786b2ba4e5d2f0859406d814ba00e210454e5b7f185d08f1b3bf6fa15f523f`
`font_01_sfnt_off00007266.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7266	10224 bytes
SHA-256: `3be313d221a10da8fefd3a72c9ae6e8d1e400ee1b09d444894b4be9437824de1`

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