PDF malware analysis — malicious · aa8b58a13995a380

MALICIOUS

PDF

281.4 KB Created: 2022-01-19 04:54:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06

MD5: 5e7f59de938ca44156263776a8635ba1 SHA-1: e0720a1da1d8d9f2ea4461462e4d39f23ff18803 SHA-256: aa8b58a13995a3809c55ca8686081f5295917042d5b582c696f9e59c60fd8df3

136 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.7003

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://philabc.ru/uplcv?utm_term=mcgraw+hill+answer+key+grade+5 PDF link annotation
- https://mavachhaiphong.com/upload/files/lowiwerejuwolod.pdfIn PDF document text
- http://partiaweb.ir/upload/files/82922674358.pdfIn PDF document text
- https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/52a40604a59b902bf006ec9293238973/44338145123.pdfIn PDF document text
- http://backkwang.com/userData/board/file/fugodafizedifo.pdfIn PDF document text
- https://h016s5or78-du3.com/contents/files/jiredokoperugimorirop.pdfIn PDF document text
- https://bakkerijkamstra.nl/userfiles/files/42801115478.pdfIn PDF document text
- http://nemdanangpho.com/uploads/2021-11-07/images/files/54499674431.pdfIn PDF document text
- http://kleinschaden-expert.com/userfiles/file/somovasexosonebezifojag.pdfIn PDF document text
- http://ankamet.com/userfiles/file/gosepukonuvumuxep.pdfIn PDF document text
- https://www.la-providence-ehpad.fr/ckfinder/userfiles/files/vedudegipiredasonen.pdfIn PDF document text
- http://maksimetall.ru/files/45819047125.pdfIn PDF document text
- https://edinburghpools.com/contents/files/mirekuwavukomuj.pdfIn PDF document text
- http://dezmaster.com/userfiles/file/fixuwazunakelo.pdfIn PDF document text
- http://kodemari.info/data/files/73380489860.pdfIn PDF document text
- http://shop-exclusive.cz/userfiles/file/39156563367.pdfIn PDF document text
- https://doublehaircenter.com/upload/ckfinder/files/13462903879.pdfIn PDF document text
- http://goupcrm.com.br/kcfinder/upload/files/guwakowa.pdfIn PDF document text
- http://brothersconsultingllc.com/kcfinder/upload/files/1583002384.pdfIn PDF document text
- http://theflowermaker.com/uploads/File/5460356062.pdfIn PDF document text
- https://www.zolmedis.lt/ckfinder/userfiles/files/2874384052.pdfIn PDF document text
- http://stefanourso.com/public/userfiles/file/puzilegulanejamo.pdfIn PDF document text
- http://qlionshousing.ca/userfiles/file/runifakafofideninawadofa.pdfIn PDF document text
- http://architettobotteonpierpaolostudioabacus.it/userfiles/files/lixewi.pdfIn PDF document text
- http://woykoff.hu/upload/file/mafifawinigifasawarifem.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0003f563.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3F563	18864 bytes
SHA-256: `71af6fdb74d25d46bdda09b1492df9d2fd5f10a81b0e4c9474dde5200721cfe4`
`font_01_sfnt_off000426d6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x426D6	16416 bytes
SHA-256: `cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336`
`font_02_sfnt_off00043d7a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x43D7A	10852 bytes
SHA-256: `5c8050dd7a34506ff945a2516f73d78b9beb83dc1c27e4ee357ff1e5f6fa8dad`

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