PDF malware analysis — malicious · 97cadda77218989b

MALICIOUS

PDF

69.4 KB Created: 2021-09-21 16:06:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: a89f09babb0e342777c5dcd0b0ff1b09 SHA-1: b0f3829b6590dc36561f1f01cf1886d153f4f879 SHA-256: 97cadda77218989bc15e59d80ab640c0d293ba21d7870ce59527321f14aba9af

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links pointing to various domains, many of which are associated with link farms and compromised CMS uploads, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. The presence of external URIs and link farm heuristics points to a strategy of directing users to external, potentially malicious, content.

Machine Learning

Nyx PDF Classifier malicious score 0.9975

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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 https://infrive.ru/uplcv?utm_term=wps+apk+pro+download PDF link annotation
- http://devitohomesorlando.com/userfiles/files/muxixarixomutulalevi.pdfIn PDF document text
- https://whatproperty.ng/ckfinder/userfiles/files/misejejoremaxeza.pdfIn PDF document text
- http://computer-rudolstadt.de/upload/file/numevubufebiwedeb.pdfIn PDF document text
- https://indobaliart.com/sitefiles/file/toxabugivodukaveruwuveb.pdfIn PDF document text
- http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142a5cb20c87---dedurazijiwuziterope.pdfIn PDF document text
- http://serbanindustrialconstruct.ro/uploads/files/46636443415.pdfIn PDF document text
- http://gibkrakow.pl/uploads/files/xedufuge.pdfIn PDF document text
- https://zhansq.cn/upload/file/buzuxusenafi.pdfIn PDF document text
- http://augustaelectricalwork.com/editorData/file/zojuziforarukazisinifejut.pdfIn PDF document text
- http://pn-tech.net/userData/board/file/xofemasixarebuxelup.pdfIn PDF document text
- http://architettobotteonpierpaolostudioabacus.it/userfiles/files/50896085383.pdfIn PDF document text
- http://immobilier-valence-agen.com/userfiles/file/jupujimabi.pdfIn PDF document text
- http://nollve.com/img/editor/image/file/jakoxiridiwimijoresulo.pdfIn PDF document text
- https://pasarangroup2.com/contents/files/53274635618.pdfIn PDF document text
- https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/kbj3m5a3bpihdt1nfddbvjev9j/80919391931.pdfIn PDF document text
- https://www.elshandmadedesign.nl/ckfinder/userfiles/files/sulefolevepi.pdfIn PDF document text
- https://tommytest.dish1314.com/data/html_editor/files/38995125976.pdfIn PDF document text
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/19989c06843fea058d752fbbc868f479/fupesadawenaretufoxa.pdfIn PDF document text
- http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/16136e8db942b2---51646781443.pdfIn PDF document text
- https://zenit-npk.ru/files/file/xonuxum.pdfIn PDF document text
- https://bhavanarayanaswamy.org/userfiles/file/xojivelatiwuderejegena.pdfIn PDF document text
- http://abwmarlboropike.com/uploads/files/movukumogum.pdfIn PDF document text
- http://sellmysayarah.com/userfiles/files/duwutosegazademozaboke.pdfIn PDF document text
- http://pascalparrot.com/uploads/assets/file/mupubojomu.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_off0000b4bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB4BB	14556 bytes
SHA-256: `c2efecb9ddca98ff240d2f80a9788fb5a6287c158c9ec1e012ed27e4833302cf`
`font_01_sfnt_off0000d8f5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8F5	10232 bytes
SHA-256: `911a87f6f2cda13ee1449fca3e34c1a668523db6a00ee7b6bb03bc759659d2b5`
`font_02_sfnt_off0000f01b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF01B	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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