PDF malware analysis — malicious · d22a8fe283e4cca9

MALICIOUS

PDF

40.3 KB Created: 2020-11-06 02:57:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23

MD5: 8f640348878091c737a650d2cbcc4631 SHA-1: 0f894e0ea28b281d2715abb9edc4e801e0136613 SHA-256: d22a8fe283e4cca9a1bc2f8b9c70dc511395e38911ce4346d9868c397e753321

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://trafffi.ru/123?keyword=numero+en+ingles+para+ninos PDF link annotation
- https://cdn-cms.f-static.net/uploads/4366312/normal_5f8ff8be7237c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388598/normal_5f95afc152459.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368218/normal_5f9bf05b00c1f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4407782/normal_5fa431ffa8dfe.pdfIn PDF document text
- https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/xivutimumarumanede.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4443812/normal_5fa2e30c6f05f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366622/normal_5f8f8b06cfd2e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369520/normal_5f9a38749ed68.pdfIn PDF document text
- https://pujatimosu.weebly.com/uploads/1/3/2/6/132681823/1392043.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/baposivarabuj/speed_and_agility_workouts_for_basketball.pdfIn PDF document text
- https://s3.amazonaws.com/kudowo/amc_8_statistics_2000.pdfIn PDF document text
- https://s3.amazonaws.com/wewuxuviwar/knowledge_management_2019.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_off00005e5d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E5D	5108 bytes
SHA-256: `ad124d3020061bde673dce3c45d4d6fd61518355936f6ef2b1ccffe144fbd717`
`font_01_sfnt_off00006faf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FAF	10852 bytes
SHA-256: `582248aded5d5d9e87323bf6cd72eb38bc3fdcc60f4bb69e05043d4c47cbfc9d`

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