PDF malware analysis — malicious · 7dabf5cfe7689847

MALICIOUS

PDF

46.9 KB Created: 2020-11-07 08:39:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20

MD5: 00eb2801995154d8aaf98d701cff810b SHA-1: 7f6080ac62d3b5f484098866aa32eb03fc6c981a SHA-256: 7dabf5cfe7689847340b5220f41654f35e3331015fe074f3f88bef813bda1d14

136 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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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://trafffi.ru/aws?keyword=mobdro+apk+for+android PDF link annotation
- https://wekegakusujesal.weebly.com/uploads/1/3/4/2/134266445/449ff3.pdfIn PDF document text
- https://gokipeko.weebly.com/uploads/1/3/4/3/134351508/gebarixinari-sagigij-mokanodipe.pdfIn PDF document text
- https://jedunaxalow.weebly.com/uploads/1/3/1/6/131606453/jopururedapuji.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/banula/cardiac_cycle_ncert.pdfIn PDF document text
- https://s3.amazonaws.com/desekusoxi/808707718.pdfIn PDF document text
- https://najoluni.files.wordpress.com/2020/11/torupisiwi.pdfIn PDF document text
- https://sisiviweze.files.wordpress.com/2020/11/goresosuvufat.pdfIn PDF document text
- https://s3.amazonaws.com/jumedemimo/fuzapeto.pdfIn PDF document text
- https://guxufugamu.files.wordpress.com/2020/11/94033030057.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_off00007a5a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A5A	5032 bytes
SHA-256: `4074eca84d6e0f88dc8ced349fd26404628e8fd33d7c8ddb9b83c649d9980a27`
`font_01_sfnt_off00008b94.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B94	10484 bytes
SHA-256: `0b295337e9d6a52077c387fa7bf1d4bbe4db51861f6c7d1238e6a8f93b9eee42`

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