PDF malware analysis — malicious · 85146324bbc44729

MALICIOUS

PDF

49.9 KB Created: 2020-11-07 01:41:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 49f29f5a48ad1794da2dc12c0aa39bea SHA-1: e1a37626b2fb166cabe2dfed6fb22862c4edeeb8 SHA-256: 85146324bbc44729fca24b973fa2bab30d42362fe120001b1b037d186737fa02

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=webquest+templates+free PDF link annotation
- https://cdn-cms.f-static.net/uploads/4385887/normal_5f91d5960e405.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385415/normal_5fa4733f5947b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378856/normal_5fa34365cc1ac.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413846/normal_5f9796e607a73.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://gogajajar.files.wordpress.com/2020/11/48539197016.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/079521b0-bb79-4930-b9f4-d334dce935b0/2883511086.pdfIn PDF document text
- https://s3.amazonaws.com/kabisebax/ingenuity_trio_3-in-1_high_chair_-_ridgedale.pdfIn PDF document text
- https://s3.amazonaws.com/voxazedisula/ezekiel_pulp_fiction_verse.pdfIn PDF document text
- https://s3.amazonaws.com/xarojapi/standardization_of_sodium_thiosulfate_with_potassium_dichromate.pdfIn PDF document text
- https://gozevawu.files.wordpress.com/2020/11/84746957954.pdfIn PDF document text
- https://s3.amazonaws.com/fosawef/combined_gas_law_problems_worksheet_key.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_off000084ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84BA	5324 bytes
SHA-256: `09fdd4f8c174286558e83f434966f219fe944a0e52c0770c92f19b1d2fe8bcd9`
`font_01_sfnt_off000096cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x96CC	10952 bytes
SHA-256: `20f938329db7a412ff26adc0656f59983020f5b73ac5a9ad4ba5f2a60acd3a99`

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