PDF malware analysis — malicious · 9117135e77cf8acd

MALICIOUS

PDF

99.7 KB Created: 2021-09-11 19:35:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 93a38eb614d3f47aec1f45f78e62e8f9 SHA-1: 991ca48954bb9d1e1be5da29dc0dd2358bb052c2 SHA-256: 9117135e77cf8acd49a3a40e229df02e60563a475b529649bbe505167360f627

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics, including ML and ClamAV, as malicious. It contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The presence of embedded URLs and the nature of the detected threat (Pdf.Phishing.Trojan) strongly indicate a malicious intent to redirect users to harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9961

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://pixomot.ru/uplcv?utm_term=android+sertifika+yukleme PDF link annotation
- https://bursakaynak.net/userfiles/file/48659123968.pdfIn PDF document text
- http://jucal.es/images/file/lufedabulifejijemomabu.pdfIn PDF document text
- http://bertrandetgastineaudesigners.com/userfiles/file/ruzowurobup.pdfIn PDF document text
- http://winhazel.com/indigo/ckfinder/userfiles/files/romikofipefafe.pdfIn PDF document text
- http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613146ecee163---dikiron.pdfIn PDF document text
- http://importfoodfair.com/userfiles/image/2021/09/file/97372119035.pdfIn PDF document text
- http://phanmemerp.vn/attachment/files/3178553058.pdfIn PDF document text
- https://esterkins.de/ckfinder/userfiles/files/45650117021.pdfIn PDF document text
- https://tranthachcaodanang.com/uploads/image/files/82938419652.pdfIn PDF document text
- https://icon-studios.com/userfiles/file/wefapepogiludo.pdfIn PDF document text
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613cb76ff11d0---24580324582.pdfIn PDF document text
- http://ottuk-e.org/userData/board/file/7433088869.pdfIn PDF document text
- http://bunny888.com/ckfinder/userfiles/files/74011920246.pdfIn PDF document text
- http://www.singchai.co.th/ckfinder/userfiles/files/vozogukotomewese.pdfIn PDF document text
- https://bodykneadstherapy.com.au/ckfinder/userfiles/files/28393131003.pdfIn PDF document text
- https://santa.sg/images/users/00000000/files/jajevafiteganupari.pdfIn PDF document text
- https://trungtamgiasuhcmmq.com/uplaod/quangtri/files/39634875380.pdfIn PDF document text
- https://maintogelonline2.com/contents/files/47450773329.pdfIn PDF document text
- http://budropol.de/Upload/file/62579290785.pdfIn PDF document text
- https://ctcitsupport.com/media/files/sixosipoligikuje.pdfIn PDF document text
- http://furniture83.com/upload/files/dipuribisi.pdfIn PDF document text
- https://tapuionoticias.com/ckfinder/files/50591307178.pdfIn PDF document text
- https://pierrelemagicien.com/userfiles/file/54931545655.pdfIn PDF document text
- https://delta-relay.be/userfiles/file/52587878873.pdfIn PDF document text
- http://vonschickenconcord.com/uploads/files/1541324278.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_off00011d49.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11D49	19616 bytes
SHA-256: `35f0447b73820fae12026ced6ebcdad901c88573182ede5f2a37e61c0ad71899`
`font_01_sfnt_off00014e46.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14E46	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0001665d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1665D	10804 bytes
SHA-256: `dde95d825c1c0dd93877b6f817dd583be188ccabc26d6a8f65f6a17be2765d74`

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