PDF malware analysis — malicious · 27ad776d2705b02d

MALICIOUS

PDF

77.4 KB Created: 2021-09-03 20:59:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31

MD5: f3922156614e1587f9d453509fae5998 SHA-1: 1880a9d654290c8f7fbe8a21b4f4b7b4ee1467aa SHA-256: 27ad776d2705b02d32450bfd6e45cb331804c17e9f3cb94a5850ae849c8a5d4c

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, presenting numerous URLs that point to potentially compromised WordPress upload directories. These links likely serve as a distribution mechanism for further malicious payloads or phishing content.

Machine Learning

Nyx PDF Classifier malicious score 0.9901

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
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
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 http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607437cc59ed3---relapukopibani.pdf In PDF document text
- http://kocavietnam.com/upload/files/vogulisigegedomogeb.pdfIn PDF document text
- https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/3c682309fea1fd1f7d1cd88017eb33e3/torulib.pdfIn PDF document text
- http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/ddahfthfgvv4pli56iqj5s27a6/94054893699.pdfIn PDF document text
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/bc49813fb4e23d27d0691d6ef7a1905a/16369217702.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160825577f3b75---dubukobikarom.pdfIn PDF document text
- http://phsbulldogs1966.com/clients/8/87/87911cb64b10f66d93d15f7b6e22d365/File/seligakedibi.pdfIn PDF document text
- https://concertwristband.com/resimler/files/36445346130.pdfIn PDF document text
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1cf3be122---lidofelumeviloso.pdfIn PDF document text
- https://economiadecomunion.net/ckfinder/userfiles/files/liwipukolugulopewugo.pdfIn PDF document text
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b17e93f31d8---zabalutedidifaw.pdfIn PDF document text
- https://acgroupenterprise.com/userfiles/file/62937864599.pdfIn PDF document text
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/udtf0bt7hknt9va216v6hn4usp/46724050225.pdfIn PDF document text
- https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/86el2srcjtrnjqp3f8p93umh6g/94983648082.pdfIn PDF document text
- http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f43517793---86874164726.pdfIn PDF document text
- http://rapet.hu/files/tojuma.pdfIn PDF document text
- http://tutek.eu/userfiles/file/givasobedufesigotemelij.pdfIn PDF document text
- https://ost-fogging.com/upload/files/panegoputuguxixewe.pdfIn PDF document text
- http://cocoabuterol.com/upload/files/42332584494.pdfIn PDF document text
- http://bsbcarpet.com/userfiles/file/vulizewodibegewevinu.pdfIn PDF document text
- http://www.rafaellucenaehijos.com/ckfinder/userfiles/files/pikixevaninegi.pdfIn PDF document text
- http://airmon.hu/images/files/paker.pdfIn PDF document text
- http://mamtaniketan.com/userfiles/file/tirowulobenupiduzula.pdfIn PDF document text
- http://azizolace.cz/images/file/jufikosagifobenima.pdfIn PDF document text
- http://www.mbk-montage.nl/ckfinder/userfiles/files/18590831662.pdfIn PDF document text
- http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1609073ef5d31d---73666121244.pdfIn PDF document text
- https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/51305d342d4861e7ed601768baa2d504/47521646010.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=super+shred+diet+book+pdf+downloadPDF link annotation
- 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_off0000c5fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC5FA	11088 bytes
SHA-256: `2b7ee18ad1403cc591f362bd9b09f1168eaba42b211091bd39a94bd6a61399de`
`font_01_sfnt_off0000df92.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF92	18260 bytes
SHA-256: `5b34766095cc33d7e056c4cbd9f8a3d6fc9dc554870f6b3c205c5c34ab3a9d0f`
`font_02_sfnt_off00010f5d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F5D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

Open this report in the interactive analyzer, or submit your own file for analysis.