PDF malware analysis — malicious · affd3d3b37992e17

MALICIOUS

PDF

444.7 KB Created: 2021-07-03 14:56:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: 0d8a14b7c95ff9043318c7a9c40769e6 SHA-1: 59c9971a936a746ada1b5eda338db45e1b076af5 SHA-256: affd3d3b37992e17feb8868028598c83c052a6a041b4ce75be5b57fcebc53efa

166 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs an advance-fee scam lure, directing users to compromised websites to download further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The document's structure and embedded URLs suggest it is part of a phishing campaign designed to trick users into downloading and executing a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.7601

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
Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE

Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
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.
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=compound+words+starting+with+g PDF link annotation
- https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/0b0e05e961caafaa0e779eadaf18cb0d/89594453118.pdfIn PDF document text
- https://svingenieria.cl/userfiles/file/41078271948.pdfIn PDF document text
- https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/65b95da1e0f987bc1b1124fdd4670865/bobakas.pdfIn PDF document text
- http://tele-video.ru/upload/files/xifekemabavufif.pdfIn PDF document text
- https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/785585b80b5a391bac848ac72e69a7f7/27268946588.pdfIn PDF document text
- http://daindnc.com/fckeditor/userfiles/file/23586795448.pdfIn PDF document text
- http://khiconghoixuancong.com/Khicong/admin/userfiles/file/3175402423.pdfIn PDF document text
- http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16086c404e8df7---zovore.pdfIn PDF document text
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/oj3b3tki2f9g8lgd7tofa80204/zobijepatanekinerazekov.pdfIn PDF document text
- http://cz-synergy.cz/data/file/5298597762.pdfIn PDF document text
- http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606faeab2d8be---leduwopafekasexexonedop.pdfIn PDF document text
- http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/160736464bb2b4---mimiv.pdfIn PDF document text
- https://blagoustroystvo24.ru/ckfinder/userfiles/files/sutofawutofopikezozedex.pdfIn PDF document text
- https://quatden.vn/webroot/img/files/10848257851.pdfIn PDF document text
- http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160c7ab08361b3---xunexizuzeweg.pdfIn PDF document text
- https://digireg.it/upload/milameremubozinewi.pdfIn PDF document text
- http://runo34.ru/attachments/file/nabofedanometasoveve.pdfIn PDF document text
- http://angelescare.com/userfiles/file/bivojilosarexo.pdfIn PDF document text
- https://jamurgoreng.net/contents//files/49384969671.pdfIn PDF document text
- https://nocenzura.space/web/img/podborky/files/57623486394.pdfIn PDF document text
- http://niestachow.pl/data/aktualnosci_imgs/file/42664261229.pdfIn PDF document text
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/64c439950b0745341638d2937844e9c3/30123270780.pdfIn PDF document text
- https://polandpools.com/contents//files/63239727008.pdfIn PDF document text
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606d19f0ce0c9---wegexiwujuxuxawamaseb.pdfIn PDF document text
- https://kurtoglumob.com/upload/file/ragegu.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000685c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x685C6	17128 bytes
SHA-256: `aece7e54df51bb5fa52a72d8e6e6ff074454f9104f0abbb2cb9a5b0beba05f1d`
`font_01_sfnt_off0006b29f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B29F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0006cab6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6CAB6	10876 bytes
SHA-256: `891111048cb32e20cac584dbfc1de483457d05861a6dae2a69041077263dab34`

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