PDF malware analysis — malicious · ba5687e3c5108021

MALICIOUS

PDF

38.7 KB Created: 2020-11-07 11:17:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 2c028e79bd1a11b6e73507d57f9161d9 SHA-1: 97c05f37ad9a3341724ffeba4a1fbbca8e6a9144 SHA-256: ba5687e3c5108021c42f512f8612d156f79850f8b41da5a5e4bdcc7042c1e98b

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=balloon+td+6+apk+fire+7 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4411694/normal_5fa0b8fb3f565.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408483/normal_5f97a818f36c5.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/tapexiw/inside_sales_coordinator_job_description.pdfIn PDF document text
- https://s3.amazonaws.com/wazorixekunafob/learn_t-sql_querying.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/08aed5ee-89ad-442d-b2f4-66afecf7c4cb/99068757411.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/743a6f47-b34f-434a-90e7-d9fa6cb66ebb/87624849290.pdfIn PDF document text
- https://s3.amazonaws.com/legenapi/71976133235.pdfIn PDF document text
- https://s3.amazonaws.com/wibadinavosunom/queen_size_bed_rails_walmart.pdfIn PDF document text
- https://s3.amazonaws.com/mutirexa/wunelezapaxavekugegapopa.pdfIn PDF document text
- https://mutozofe.files.wordpress.com/2020/11/65548376527.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1e705cd5-a6e2-4894-a200-fafedb845e56/51827010932.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_off00005823.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5823	5204 bytes
SHA-256: `3393100dacac47dd80ab70e2d5b4ec9f5d9032bcc89d37f5adee814a71da00b8`
`font_01_sfnt_off000069f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x69F2	10856 bytes
SHA-256: `4932decf237dd2bbba14734874d2945b19876fce0088ba285020efc73042795f`

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