PDF malware analysis — malicious · 0188d77d406a7818

MALICIOUS

PDF

46.1 KB Created: 2020-11-05 17:19:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: e81e3c545ed4e7be0f3d703ba44fd85a SHA-1: f6998590814ff97b14228f4c5de3699e038dd9fa SHA-256: 0188d77d406a78181884e6d662cd56c3949e0238f35e6bb2de69b5e3f6a60985

76 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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://traffset.ru/123?keyword=what+is+curriculum+guide PDF link annotation
- https://ruwotepileta.weebly.com/uploads/1/3/4/4/134493455/bc4859bb.pdfIn PDF document text
- https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/a5c0ea34206.pdfIn PDF document text
- https://boseveju.weebly.com/uploads/1/3/4/5/134595203/499d644e10d.pdfIn PDF document text
- https://sixodajumam.weebly.com/uploads/1/3/4/3/134311071/pejedevetevobozo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369671/normal_5f892119b1f94.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/tadovu/15236071921.pdfIn PDF document text
- https://s3.amazonaws.com/kukazowox/tilufapuligabarumixuset.pdfIn PDF document text
- https://s3.amazonaws.com/vidadaviwal/80841047156.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8081b419-f4b7-4883-9966-7191c72d21fb/59635937921.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/05c93c08-f172-48b2-82f7-f510aeb7d53c/wurazilivazijubixi.pdfIn PDF document text
- https://s3.amazonaws.com/zufaxepixiguxax/belekexafuz.pdfIn PDF document text
- https://s3.amazonaws.com/wukara/47569780359.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_off000076bd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x76BD	5364 bytes
SHA-256: `11c2dc6d0201aac9eee2a9df39aaff851504fc14e7e06ad169ae724c4c413ced`
`font_01_sfnt_off000088d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88D8	10288 bytes
SHA-256: `81ca8b1e22f1db3ec83373b301f05b38b3a3b95e2fcc60bfc3f3b05b7eb47d91`

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