PDF malware analysis — malicious · 4aff625cc19bc512

MALICIOUS

PDF

83.7 KB Created: 2021-10-23 23:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06

MD5: 1911e1a61b074512206db3e323c0b7c6 SHA-1: ac649553fd3517b9bc28196a208940392085e4b8 SHA-256: 4aff625cc19bc512430f3cee203ffbb1c9666ad5a737e9a801a1b66bd558db66

126 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://infrive.ru/uplcv?utm_term=how+much+is+my+used+catalytic+converter+worth PDF link annotation
- https://kor.mycultureis.com/FileData/ckfinder/files/20210929_F3AE5E21D7B17C04.pdfIn PDF document text
- https://lalicorne-hotel.com/userfiles/file/nowaniwavufekivuw.pdfIn PDF document text
- http://fujiya-la.com/uploads/files/52680458881.pdfIn PDF document text
- https://fiscconsulting.com/userfiles/file/41639478852.pdfIn PDF document text
- http://snp-ent.com/files/fckeditor/file/1623465447614f91c11759c.pdfIn PDF document text
- http://nano-vip.com/ckfinder/userfiles/files/4262236797.pdfIn PDF document text
- http://annabarons.com/files/files/77240211796.pdfIn PDF document text
- https://maryamghiasi.com/images/upload/files/18191978486.pdfIn PDF document text
- http://eluvial.com/sites/all/sites/eluvial.com/files/10878000762.pdfIn PDF document text
- http://dnepropress.net/files/file/42551587712.pdfIn PDF document text
- http://xn--80age2amlc.xn--80adxhks/pics/images/file/texitipofixugexaxede.pdfIn PDF document text
- https://malashealthcare.com/userfiles/files/motezemefupok.pdfIn PDF document text
- https://tylbm.com/Upload/ckeditor/files/6195158599.pdfIn PDF document text
- http://esangsok.com/upfile/files/9248038690.pdfIn PDF document text
- http://associatedreclaimed.reclaimedoils.com/userfiles/files/sulin.pdfIn PDF document text
- https://westhigienia.hu/editor_up/bogifonine.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/47d0b9a18ab95828957325a8ab16bbba/26971850007.pdfIn PDF document text
- https://kaparatt.com/images/File/89029254513.pdfIn PDF document text
- http://www.yeosung21.or.kr/ckfinder/userfiles/files/1632347155.pdfIn PDF document text
- http://veterina-naslunci.cz/userfiles/file/vaxolifavi.pdfIn PDF document text
- http://school19-zav.ru/userfiles/file/venosuranumotavojoguvezib.pdfIn PDF document text
- http://britishcytology.org.uk/ckfinder/userfiles/files/35116262788.pdfIn PDF document text
- http://smart.sut.ac.th/tsme/src/lib/ckfinder/userfiles/files/75657089257.pdfIn PDF document text
- http://klgd.spokoino.ru/i/upload/files/sunujokaf.pdfIn PDF document text
- https://isitekmuhendislik.com/userfiles/file/ruzitajos.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_off0000e462.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE462	10992 bytes
SHA-256: `056734531daeee824318c860afaeb9bacee2ec2b8607b6fb61cc51616f919be2`
`font_01_sfnt_off0000fdca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFDCA	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000115dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x115DC	16616 bytes
SHA-256: `841a9e23b6bbcd3a8319c5af684c67c7eefa111fb273c681ea67f306e0dcc731`

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