PDF malware analysis — malicious · 5744d28ea180f95d

MALICIOUS

PDF

73.1 KB Created: 2021-03-01 21:35:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04

MD5: 6fa5db2dd73048101a98c38d30858836 SHA-1: b01fceaedb435d4cda429c95b93dca433c5b87d6 SHA-256: 5744d28ea180f95d403b73f6d1dbc54af1d5a9570182ec5f13cf15751eaabae6

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://dugedepap.ru/award?keyword=stairway+to+heaven+sheet+music+piano+free+pdf PDF link annotation
- https://cdn.sqhk.co/texafikogot/ejijeiN/crunchyroll_tem_naruto_shippuden_dublado.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4401973/normal_602ebfc4acf46.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4446772/normal_6007b59f611c1.pdfIn PDF document text
- https://cdn.sqhk.co/vopupevomate/jbAnghT/battle_royale_simulator_roblox_codes_2020_june.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369150/normal_5fd0ad79002ba.pdfIn PDF document text
- https://bavopasivivewid.weebly.com/uploads/1/3/0/7/130738836/7689738.pdfIn PDF document text
- https://cdn.sqhk.co/guzunilepin/EjhQsjh/catbird_nyc_rings.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/wuxupewu/dazaruniv.pdfIn PDF document text
- https://s3.amazonaws.com/dudujopixejikug/evernote_apk_onhax.pdfIn PDF document text
- https://s3.amazonaws.com/semuxemakaw/vaxorijedarorotexizuwis.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_off0000e10f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE10F	5720 bytes
SHA-256: `d5fc292fccbae690d2431f7af72bd79ceb5e6758e914c6a6a51ab9e7438874f0`
`font_01_sfnt_off0000f481.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF481	10212 bytes
SHA-256: `a92ed2f4c7cf2bac029ba7443efffe4e099a19199fb74d69bc43f00a490a33e7`

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