PDF malware analysis — malicious · 02f1c70be13ba5da

MALICIOUS

PDF

65.4 KB Created: 2021-09-19 10:12:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31

MD5: 129030d02c258ebe2832fcc3dff7609e SHA-1: a6faf89664121d5ee777303dc987503e72e0f968 SHA-256: 02f1c70be13ba5da903e65d1a9e5bb50f34e89ba7e3cd0ecd98aff5e9f428cdf

114 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample is identified as a malicious PDF by ClamAV, with heuristics indicating it functions as a link farm and directs users to an IP address. The PDF contains numerous embedded URLs, many of which are likely part of a phishing or redirection scheme. The presence of external URIs and a direct IP address link suggests an attempt to lead the user to a malicious site.

Machine Learning

Nyx PDF Classifier suspicious score 0.4856

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
Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL

PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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
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://taipeitccia.org/CKEdit/upload/files/40337518667.pdf In PDF document text
- http://marymo.ru/uploads/files/60593912779.pdfIn PDF document text
- http://accapierre.it/userfiles/files/12716402496.pdfIn PDF document text
- https://synodradomski.pl/userfiles/file/64771747832.pdfIn PDF document text
- http://140.121.125.49/ckfinder/userfiles/files/20210919_143004.pdfPDF link annotation
- http://pwmtqatar.net/userfiles/file/zemepawumuxusukamorupuze.pdfIn PDF document text
- http://archiw.gbpopatowiec.pl/img/upload/files/bewevatesebasixura.pdfIn PDF document text
- http://hoanggiaphatland.com/uploads/image/files/zatakatixivabiraxigizud.pdfIn PDF document text
- https://pezenasenchantee.fr/userfiles/file/3095842122.pdfIn PDF document text
- http://turhantur.com/turhantur/files/pakugadubaxagaper.pdfIn PDF document text
- http://vivatbacchus.hu/files/file/fuxirutuxume.pdfIn PDF document text
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16140872b68653---kojugaxesazudexadinura.pdfIn PDF document text
- http://truhlarstvi-strakonice.cz/files/file/bokezogamabuwiralug.pdfIn PDF document text
- http://conhantaoankhanh.com/webroot/img/files/sugarali.pdfIn PDF document text
- http://nuk-amro.de/userfiles/file/fuzinal.pdfIn PDF document text
- https://totalsewa.com/userfiles/file/28957328266.pdfIn PDF document text
- https://implant-drill.com/userfiles/file/90013949590.pdfIn PDF document text
- http://estatepie.com/files/userfiles/file/kusoga.pdfIn PDF document text
- http://panova-art.com/files/file/fatemosad.pdfIn PDF document text
- https://bancodevida.com/bancodevida/admin/images/image/file/13902682220.pdfIn PDF document text
- http://worldprint.su/userfiles/file/baleziporenuzagas.pdfIn PDF document text
- https://glozor.com/userfiles/file/fojewavejo.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=navigation+bar+app+androidPDF link annotation
- 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_off0000b3d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB3D8	10404 bytes
SHA-256: `85dacb9356fbd190d87bdef261db9cb2820ea8f51c098ba331c85fb6bf401299`
`font_01_sfnt_off0000cb15.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCB15	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000e327.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE327	14760 bytes
SHA-256: `1eb5d3596f0fae37f32125038c0332c4bb05cba8dc0e31994b4d729fedacc560`

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