PDF malware analysis — malicious · b738a5b0c6735c0e

MALICIOUS

PDF

40.6 KB Created: 2020-11-06 09:10:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23

MD5: 500908dde356fb7dd36f983d164572dd SHA-1: fdba88a2d30b78e732bc63cdb278a304b55ec131 SHA-256: b738a5b0c6735c0ea21e3537dd5429843387b98ad57e0d80e0dd16aaeee7d71c

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://trafficel.ru/123?keyword=cachet+cbd+oil+review PDF link annotation
- https://cdn-cms.f-static.net/uploads/4376382/normal_5f93898466671.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365601/normal_5f871ea959713.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449622/normal_5fa0c7f85c0de.pdfIn PDF document text
- https://tekegalesi.weebly.com/uploads/1/3/0/7/130740489/6173289.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4422136/normal_5fa12be8cef7c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380527/normal_5f967d3a45bc0.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/zakunafu/79608946184.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/06cf8355-ea68-4df7-953f-550f720175ba/battlenet_can_t.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/71c1ffbe-c540-482b-b10e-e83e9ffa73f2/mis_sentimientos_erroneos_silvia_olmedo_descargar.pdfIn PDF document text
- https://s3.amazonaws.com/fibesezati/fatam.pdfIn PDF document text
- https://s3.amazonaws.com/tuzakifezara/eyes_of_glouphrie_rs3.pdfIn PDF document text
- https://s3.amazonaws.com/xedewofuretujo/funny_fishing_photos_pictures.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_off00006212.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6212	5048 bytes
SHA-256: `c4ef369d3c9a05c17fb2464c2bd25a7386d205863ae221447476f780dcecb2a6`
`font_01_sfnt_off00007341.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7341	10240 bytes
SHA-256: `47a4b7de5b8f0235c71ee25e7640eb200ed6f7c6bf5e8ccd9b8f2e591ee510db`

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