PDF malware analysis — malicious · 10fe50735f9825e3

MALICIOUS

PDF

71.4 KB Created: 2021-03-04 02:29:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10

MD5: 3d2da82a141c2b2bed3fada40184ce05 SHA-1: 182fd04fa3e4a16a584958f55c4e368dbdb0d3d1 SHA-256: 10fe50735f9825e30e66c0e009d2ae0cc8acd7c226b5a3b2053b3319cbf50b9f

136 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://jumiwimov.ru/award?keyword=fleck+5600+sxt+error+code+1 PDF link annotation
- https://static.s123-cdn-static.com/uploads/4494166/normal_5fdf3381778f3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4530910/normal_5fd66e2cd6bef.pdfIn PDF document text
- https://cdn.sqhk.co/ketusugedi/hb4ieif/14055838810.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486221/normal_5fd7de637ff16.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4489717/normal_60320076c8116.pdfIn PDF document text
- http://budokudepa.scienceontheweb.net/how_do_you_block_a_call_on_a_panasonic_cordless_phone.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4394082/normal_5fd7c8d55f1e2.pdfIn PDF document text
- http://basomivunowa.22web.org/mutokoxenogenegazusogigej.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469145/normal_602900d210ea1.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/taguxif/metonoto.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_off0000dbd6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBD6	5280 bytes
SHA-256: `66549f609b774f424d91e8833b554e3e8ee220556a3c6d237749c25ed0a3bba3`
`font_01_sfnt_off0000edee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEDEE	10408 bytes
SHA-256: `e39c9788013d866eb639759f5dbc12394d05bbd6b8aece9a1435ce4b3c65496f`

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