PDF malware analysis — malicious · 382e9b0a559f54fc

MALICIOUS

PDF

91.2 KB Created: 2021-08-05 05:24:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11

MD5: 7334a50725d2b14df81999b6d652197c SHA-1: b0005af67dd34128f997a1b954c67d0ce3452d10 SHA-256: 382e9b0a559f54fc0df5a01949f190270bb0cc7f1e73c8eed53b63a3c5a0b97d

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains a link farm pointing to compromised WordPress upload storage, suggesting it's used to host or redirect to malicious content. The presence of numerous unknown URLs further supports its role as a distribution or phishing lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9941

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://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a79b72b14d3---pabinibufizokebekutimi.pdf In PDF document text
- https://bienenaktuell.com/sites/bienenaktuell.com/files/file/vaguvopumogadone.pdfIn PDF document text
- http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b7f592030a2---nabokorogudanox.pdfIn PDF document text
- http://www.celso.org/download/33330928888.pdfIn PDF document text
- https://kitapkaplama.com/upload/ckfinder/files/65267849140.pdfIn PDF document text
- https://terminal.hr/userfiles/file/12490619650.pdfIn PDF document text
- https://repare-ton-smartphone.com/userfiles/file/69883233095.pdfIn PDF document text
- https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b82495d4051---juwesunixezukuzirisoxuwu.pdfIn PDF document text
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16091ffee0d092---83978059612.pdfIn PDF document text
- https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/eade5a05877d46da926c027286f92abc/33525812684.pdfIn PDF document text
- https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/bf0ed49feae1066b69e578befb8c3b1e/kiwagan.pdfIn PDF document text
- https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/005205362e0f73d4c7f4921cefe90bbb/26360178930.pdfIn PDF document text
- https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/66460ee6628aba84ad7f460809f42308/76544215382.pdfIn PDF document text
- http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b467a0ca1f5---gonate.pdfIn PDF document text
- http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160749e8005a61---11424825489.pdfIn PDF document text
- http://curry-box-deluxe.de/userfiles/file/zisasij.pdfIn PDF document text
- https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/qgnd1sjim5rr36905h4jiq63sl/9668860105.pdfIn PDF document text
- http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083b0356150a---10919222678.pdfIn PDF document text
- http://mevlanaasm.com/resimler/files/20589251201.pdfIn PDF document text
- http://yuanhebiotech.com/upload/files/bifuwoxamafotipuzuf.pdfIn PDF document text
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160862123d43ed---10831941634.pdfIn PDF document text
- https://asi-filter.pl/files/file/jepivapabakofevufumevowoj.pdfIn PDF document text
- http://cambridgekapurthala.com/damana/userfiles/file/58458180529.pdfIn PDF document text
- https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/8854b24922826c998f2245ec63c5021e/66761068977.pdfIn PDF document text
- http://eastmoorclassof1970.com/clients/4/43/4343e427eb1b0a0668350338a4d6b623/File/fasosa.pdfIn PDF document text
- http://driscollandgibson.com/images/edit_images/file/bufojowimerafedokagupawo.pdfIn PDF document text
- http://transsnabstroy.com/userfiles/file/xadozokozuxakalujilu.pdfIn PDF document text
- http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a45a47be397---rezogukazudeduwamitusuw.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=diaphoresis+medicine+meaningPDF 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_off000101ce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101CE	16932 bytes
SHA-256: `436fc84d95e5b6c1e38dbccec710e7aadc3e2134337e40820b4ced25cd6df362`
`font_01_sfnt_off00012dcd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12DCD	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000145e4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x145E4	10820 bytes
SHA-256: `806139acd33681a5b9f0e7dcfb7ea9b25e3217c1898cab20c79ac3941cbe6e0d`

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