PDF malware analysis — malicious · ca036a96a4cf3dee

MALICIOUS

PDF

66.7 KB Created: 2021-02-22 09:28:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25

MD5: e0146613d7dc3fa3c3e090849ff0b4c4 SHA-1: ec792287cb65b21795593dd577893de46fad3238 SHA-256: ca036a96a4cf3deeee61dded48e755b39eb5b21d2bf93c7ebb3df9deea12feaa

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://baarspo.ru/wix?keyword=lewis+theory+definition PDF link annotation
- https://static.s123-cdn-static.com/uploads/4390095/normal_5fffdc17dc367.pdfIn PDF document text
- https://cdn.sqhk.co/dawupana/cjcmbHJ/silvercloud_inn_portland.pdfIn PDF document text
- https://cdn.sqhk.co/kevapaboxer/hahhjhQ/snake_puzzle_video_game.pdfIn PDF document text
- https://cdn.sqhk.co/jigugabopu/QyHhgrJ/56714678784.pdfIn PDF document text
- https://cdn.sqhk.co/rasepotobami/ijcsRhf/keramiso.pdfIn PDF document text
- https://cdn.sqhk.co/wejagamewo/jgAhhzC/hola_music_guitar_stand_assembly.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4421330/normal_600924be70413.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4406771/normal_6010a83356ceb.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/bidurudilidujug/how_to_pay_traffic_citation_online_georgia.pdfIn PDF document text
- http://zexizel.epizy.com/81111101675.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_off0000cb9e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCB9E	4888 bytes
SHA-256: `bab1d796ca4fb962eb4cc457e7117861b0e6b85931828575e708fb3ef1a0a46d`
`font_01_sfnt_off0000dc55.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC55	10120 bytes
SHA-256: `6a5fa90e7a1832d7f561b97ec339206a5258aeae34205905ced685b0a9453ca1`

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