PDF malware analysis — malicious · 5470444bf350957e

MALICIOUS

PDF

77.4 KB Created: 2021-09-17 10:08:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: 048e880aa661c30e2d15f59d06f54acd SHA-1: 9590bd65e9a48578d53df46e546b650689b99f1c SHA-256: 5470444bf350957e97aa9f985c15dc470dfd048c2b5a2e522ee4e775f69be50e

166 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. Numerous external URLs were extracted, suggesting a potential download or redirection mechanism.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

Heuristics 6

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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://garglob.ru/uplcv?utm_term=hacker+wifi+2020 PDF link annotation
- https://tranduongauto.com/app/webroot/files/images/pages/files/ponopetifafosijowefuroj.pdfIn PDF document text
- http://haiphongcontest.com/images/files/59678137876.pdfIn PDF document text
- http://patp1ryb.ru/media/file/36363890946.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130dbb4ba8fd---30795497985.pdfIn PDF document text
- http://bibrka-school.org.ua/ckfinder/userfiles/files/97822017146.pdfIn PDF document text
- https://guapa2.com/admin/fck/file/jijimovif.pdfIn PDF document text
- https://factorysales.com/userfiles/files/zafosakerodogomasalobe.pdfIn PDF document text
- http://vetsnab32.ru/userfiles/file/7631906186.pdfIn PDF document text
- http://sampoernastrategic.com/uploads/image/files/73226015072.pdfIn PDF document text
- http://aloeverajuice.cz/files/file/8548528947.pdfIn PDF document text
- https://atrax.hr/files/memiwem.pdfIn PDF document text
- http://talesma.com/E/file/75827013825.pdfIn PDF document text
- http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/1613c7ae82d683---tiluduwakojoka.pdfIn PDF document text
- https://belitour.ir/basefile/belitourir/files/dezus.pdfIn PDF document text
- https://interior-mark.com/ckfinder/userfiles/files/gugopitiwebivetilakikeji.pdfIn PDF document text
- http://dlshixiang.com.cn/ckfinder/userfiles/files/5701429666.pdfIn PDF document text
- https://karatenarrewarren.com.au/ckfinder/userfiles/files/63472148310.pdfIn PDF document text
- http://aftckwt.com/uploads/file/movuzaponepiw.pdfIn PDF document text
- https://bisleri.genefied.co/ckfinder/userfiles/files/61799510624.pdfIn PDF document text
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138f20a39573---vemimim.pdfIn PDF document text
- https://banderlogclub.ru/Files/file/mojukibuvomumiwixifapi.pdfIn PDF document text
- http://dennehylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fesizomurabinav.pdfIn PDF document text
- https://shellserva.nl/docs/Image/file/radufamizodaw.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_off0000c575.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC575	10204 bytes
SHA-256: `057e1687102e5f5f347b5aa583adefd0e8fa2844f23cec7af33d0086c088f2da`
`font_01_sfnt_off0000dc97.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDC97	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000f4a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4A9	19832 bytes
SHA-256: `085d26fa4800bf7f57ac4b234374620466669b7b49cbb9bd3d6907fc0388ab7d`

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