PDF malware analysis — malicious · 9bfb97ac888c4c07

MALICIOUS

PDF

107.4 KB Created: 2021-08-03 09:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 95a514f4828b3efa6eb4f278ca8405b1 SHA-1: 19615da68cd68657910735272101bbe500222ce9 SHA-256: 9bfb97ac888c4c07f8cb4b60686fd5b0a11f5413d639f331df4bde00afc6db0c

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised or disposable hosting sites, some of which are associated with WordPress upload vulnerabilities. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may also be part of a multi-stage attack, potentially instructing users to open a password-protected archive.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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 https://crewmak.ru/uplcv?utm_term=hack+de+diamantes+infinitos+para+free+fire+apk PDF link annotation
- https://cortopolis.ar/userfiles/file/tegiparusomabunufabifuj.pdfIn PDF document text
- http://arcdesantmarti.com/biocop/Images/images-editor/file/18418742544.pdfIn PDF document text
- http://rehahomecare.com/upload/editor/files/binopa.pdfIn PDF document text
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd564a37518---96225791874.pdfIn PDF document text
- http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1609b745829a78---1736760663.pdfIn PDF document text
- https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/cc0qstdjss35f51sfe45r8rtmu/72962061762.pdfIn PDF document text
- https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf200d5cf3---ropiwuko.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/dd7b8s8uibhmqm57n66uvb5hib/1483331614.pdfIn PDF document text
- http://szyldkj.com/luodan/images/userfiles/file/82272969402.pdfIn PDF document text
- http://zabradli-znerezu.cz/userfiles/file/gozinezivifozizuwobuwovan.pdfIn PDF document text
- http://kstarsmall.net/userfiles/file///90419068448.pdfIn PDF document text
- http://castudio.eu/userfiles/files/bibigote.pdfIn PDF document text
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/535147cb7d1490fe2e8d9abc7ac8c12e/3286012468.pdfIn PDF document text
- https://pergamine.com/ckfinder/userfiles/files/xojifoxiki.pdfIn PDF document text
- https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/9f17fd40315d389bb691d303db11f72e/28334982040.pdfIn PDF document text
- http://seamacros.com/upload/file/jakimavigozunimu.pdfIn PDF document text
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160b462f5abf2e---dulib.pdfIn PDF document text
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/67266ee6e768c9af1f8880fccaa65c88/62536087175.pdfIn PDF document text
- https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b190486ac46---50086185956.pdfIn PDF document text
- http://optikametuje.cz/userfiles/file/5740676191.pdfIn PDF document text
- https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/1d90869c9a32da8147274b3d72f5acdc/74283560163.pdfIn PDF document text
- https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff398f1a08---luvojefonamevuzid.pdfIn PDF document text
- http://xn--zb0bw3kv4s8mn.com/upload/fckeditor/file/18476170158.pdfIn PDF document text
- http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/16106a21adccab---kelazazuseduluwaleriwoz.pdfIn PDF document text
- 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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00011c79.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C79	10816 bytes
SHA-256: `5b861f8ebde04043deb0d9d175ae126f132e2e4e9f249096f6479eb30df2caac`
`font_01_sfnt_off0001356b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1356B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00014d7d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14D7D	21876 bytes
SHA-256: `f5b13629f6c0f66fc22c51267fd83162fdf4436fb18d0bb911edc32abd332b38`
`font_03_sfnt_off00018396.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x18396	17060 bytes
SHA-256: `63bffae1951329d221e6fa6599cc1be7d05a0215b97500bee08cc22d7232b069`

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