PDF malware analysis — malicious · 6e00e7ba1dec300e

MALICIOUS

PDF

82.0 KB Created: 2021-09-23 17:07:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: 384c5c61e2088a693a5f5f755f165dd8 SHA-1: 2ec53bc48101002759bd7ac6f9d4337362d690d6 SHA-256: 6e00e7ba1dec300ec114883f74b415925f2c02636bdbb4d1597c6fc183931655

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and exhibits characteristics of a link farm, with numerous embedded URLs pointing to potentially malicious or phishing sites. The PDF structure and embedded content suggest an attempt to lure users to external resources, likely for credential harvesting or further malware distribution. No scripts were extracted, but the presence of multiple external URIs indicates a redirection-based attack pattern.

Machine Learning

Nyx PDF Classifier suspicious score 0.2548

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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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=the+bible+is+black+history+free+pdf PDF link annotation
- http://760_709737661.mildmedia-dev.eu/uploads/userfiles/files/34636264642.pdfIn PDF document text
- http://pass38.com/images/contentimages/files/80820522365.pdfIn PDF document text
- https://jiu-hang.com/upfiles/editor/files/6748539543.pdfIn PDF document text
- https://iieng.org/editor/ckfinder/userfiles/files/68604826803.pdfIn PDF document text
- https://jasz-pap.hu/UserFiles/file/bijeb.pdfIn PDF document text
- https://sdhouse.info/ckfinder/userfiles/files/92264253139.pdfIn PDF document text
- https://bokaichenyu.com/upload/files/36499237185.pdfIn PDF document text
- https://bakotech.at/uploads/ckeditor/files/kezeguwo.pdfIn PDF document text
- https://vinniescustoms.com/userfiles/files/41374093209.pdfIn PDF document text
- https://molecult.metallo-tests.ch/sites/web/upload/files/fakomegemagilutufebakovem.pdfIn PDF document text
- https://perfecthospitals.com/ckfinder/userfiles/files/zifabuvuwurad.pdfIn PDF document text
- https://autoteam.in/ckfinder/userfiles/files/50196416425.pdfIn PDF document text
- http://czminghe.com/upload/files/bidulotodidimapulinize.pdfIn PDF document text
- http://hnht-electromagnet.com/d/files/gufoxizogunawojozabigexa.pdfIn PDF document text
- http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136fe7903579---69330399406.pdfIn PDF document text
- http://design-klasse.de/ckfinder/userfiles/files/koxuf.pdfIn PDF document text
- https://magnanelli.com/userfiles/file/74807535525.pdfIn PDF document text
- http://kubablimel.pl/Image/files/xajolifokudigotifilinu.pdfIn PDF document text
- http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16148271ee548f---99049662939.pdfIn PDF document text
- http://umffz21.ru/admin/ckfinder/userfiles/files/93209310062.pdfIn PDF document text
- http://abwingsjanaf.com/uploads/files/12323962652.pdfIn PDF document text
- http://fsf-vastroad.com/userfiles/file/37982541750.pdfIn PDF document text
- http://geologocarmignani.com/userfiles/files/69791770629.pdfIn 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_off0000e54d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE54D	17784 bytes
SHA-256: `15dc0f11b6d2d8826e263c4d5d2c31151e3f9df997d1da60f7d45bb8e54901bc`
`font_01_sfnt_off0001136e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1136E	10920 bytes
SHA-256: `dfadca38090af0e47bb9beccccae2771ef9ec944ec8d3826afcbd3e851d112a6`
`font_02_sfnt_off00012cae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12CAE	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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