PDF malware analysis — malicious · 62e7f6a2f58dcc69

MALICIOUS

PDF

79.4 KB Created: 2021-09-16 23:57:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 3049926a3c73e54a05d9d5a39d54b0a1 SHA-1: fd4e1d7bda95f5882ed9576a97871040c6751265 SHA-256: 62e7f6a2f58dcc699742fea690553f9c903994e625caa9bacccf11eec50f2c50

166 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. The presence of MFA/one-time-code harvesting lures strongly suggests a credential phishing campaign. The embedded URLs point to external sites, likely part of a link farm designed to redirect users to malicious destinations.

Machine Learning

Nyx PDF Classifier malicious score 0.9960

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
MFA / one-time-code harvesting lure high SE_MFA_LURE

Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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://laborke.ru/uplcv?utm_term=how+to+get+icloud+on+android PDF link annotation
- https://guijek.com/userfiles/file/xutevofipanalirosimowipo.pdfIn PDF document text
- https://lifesmart.lifesmart.ro/ckfinder/userfiles/files/51361222686.pdfIn PDF document text
- http://peoplefoster.com/pliki/72163561370.pdfIn PDF document text
- https://icoachyou.biz/images/ckeditor/files/84406151076.pdfIn PDF document text
- https://softwebstar.com/shop/userfiles/file/saxetejosejedetabi.pdfIn PDF document text
- http://xn--80aaaaaikdebj9ccf1ayja1b5a3q.xn--p1ai/ckfinder/userfiles/files/korilazuzuxij.pdfIn PDF document text
- http://www.chiringuitomediterraneo.com/ckfinder/userfiles/files/46372760582.pdfIn PDF document text
- http://nontaromclinic.com/ckfinder/userfiles/files/lezavukoboxupulamituzije.pdfIn PDF document text
- http://zdrowejaja.com/Upload/file/80653774580.pdfIn PDF document text
- https://didaktika.drmix.cz/uploads/files/fanemabojosew.pdfIn PDF document text
- https://habibitours.org/ckfinder/userfiles/files/64278221171.pdfIn PDF document text
- http://lynhuagiasi.com/Images_upload/files/70407418445.pdfIn PDF document text
- https://okna-kursk.ru/page_edit/_samples/userfiles/files/66566646628.pdfIn PDF document text
- http://maternites-catholiques.org/ressource/site-image/files/46268097769.pdfIn PDF document text
- https://zivotzaokny.eu/res/file/68692236872.pdfIn PDF document text
- http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/161363fd0a2e48---77605608896.pdfIn PDF document text
- http://ha-sine.com/d/files/82266836310.pdfIn PDF document text
- http://redemaisfarma.com/userfiles/file/67348226665.pdfIn PDF document text
- http://language-coach.pl/uploads/files/sorapopagagazib.pdfIn PDF document text
- http://fotosvatba.net/userfiles/file/varalat.pdfIn PDF document text
- https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1613504b90f0a6---54508964154.pdfIn PDF document text
- http://cachnhietwin.com/luutru/files/vujufulikenefasoduvi.pdfIn PDF document text
- http://pro.ovh.net/~tribuene/images/banque/file/5109498004.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_off0000d116.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD116	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000e928.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE928	18524 bytes
SHA-256: `9c379d3968a2275fab09ad217f0fd78e174bbb5dce6120bd589bb951a3549ee6`
`font_02_sfnt_off0001189b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1189B	10556 bytes
SHA-256: `b6aa2607952cf9aeeb38219bd1eaf724cef398ca1cfa73230760d892172c1d72`

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