PDF malware analysis — malicious · 3b33ee370fe76d6d

MALICIOUS

PDF

67.9 KB Created: 2021-09-18 15:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: 91760a338846bb55e4ffe67d86c4e6e5 SHA-1: 1357635bfe8381c48626c2c3b7efbea9be93a2bf SHA-256: 3b33ee370fe76d6def598a3904f0cb809004770b541a73bd3eabc87398c237ab

174 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains a link farm with numerous URLs pointing to potentially compromised websites or disposable hosting, designed to redirect users to malicious content. The presence of external URIs and a link farm suggests an attempt to lure users to external sites for further exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.8456

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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://pixomot.ru/uplcv?utm_term=predication+de+william+marrion+branham+pdf PDF link annotation
- https://kolkataangikar.org/ckfinder/userfiles/files/35170929314.pdfIn PDF document text
- https://nguyenthelong.net/userfiles/files/molixosopozotodulow.pdfIn PDF document text
- http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161329ff34a1ac---94821626875.pdfIn PDF document text
- https://aadhaarretail.com/administrator/imagetemp/file/93340258822.pdfIn PDF document text
- http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/16131a1a859b34---jadevutolip.pdfIn PDF document text
- http://185.33.116.145/~acus01/upload/files/soguw.pdfPDF link annotation
- https://akrmedia.no/ckfinder/userfiles/files/51896979548.pdfIn PDF document text
- https://eagleegg5k.com/ckfinder/triplebuserfiles/file/lorivofoderuwoxetatimerab.pdfIn PDF document text
- http://modernplating.com/userfiles/file/meroxuwejuwutasesaxuge.pdfIn PDF document text
- http://stellar-toys.com/ckfinder/userfiles/files/mejomakomiwi.pdfIn PDF document text
- http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d29d838c26---maserudurogapaj.pdfIn PDF document text
- http://brilsports.ro/userfiles/file///72836186886.pdfIn PDF document text
- http://barcelonahotel.vn/UpLoadFile/file/toxuxiwaxidimosesuwimafok.pdfIn PDF document text
- http://cmuniontravel.com/userfiles/file/tepanase.pdfIn PDF document text
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613c364ba71af---23213253093.pdfIn PDF document text
- http://www.mattig-accounting.bg/fisiere/file/rofudidud.pdfIn PDF document text
- http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/pusugov.pdfIn PDF document text
- http://perksys.com/userfiles/file/11044008018.pdfIn PDF document text
- http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16139d338e0fcf---lovikojovekuse.pdfIn PDF document text
- http://asja.ua/userfiles/file/43042717099.pdfIn PDF document text
- http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612ebb1dc2ee3---zisadufemoraxanudexubus.pdfIn PDF document text
- http://retrolondontees.com/userfiles/file/xolosedimegulo.pdfIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e2a2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE2A2	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000fab9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFAB9	10944 bytes
SHA-256: `5bd76f7d48a00b123cea127d938ec2dd8e1c11421c6e6e62bdbd2f2c1800e26d`

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