Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6c0d8c65f30a0f8…

MALICIOUS

PDF

80.6 KB Created: 2021-09-18 04:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ec8eec82be18c3d69e4d5606c10b8959 SHA-1: 717641293ccc1111a17d03fdbbcb43a13534afa9 SHA-256: f6c0d8c65f30a0f81442d4a3b2b333d55d3bd320171774acafba083eb97f910f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://laborke.ru/uplcv?utm_term=iphone+11+bypass+lock+screen PDF link annotation
    • https://andymullinscommercial.com/home/andy/public_html/ckfinder/userfiles/files/zagegekokakapineki.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/ba7db0b8edfedf692c59ea04545b0149/kepedizi.pdfIn PDF document text
    • https://epiphanych.com/images/file/xakixap.pdfIn PDF document text
    • https://mgc.to/sites/web/upload/files/22849547743.pdfIn PDF document text
    • https://datatalk.ilvzhou.com/upload/files/2021/09/202109141703209708.pdfIn PDF document text
    • http://sonarkella.com/userfiles/file/joneteloduwuf.pdfIn PDF document text
    • https://santehsevast.ru/userfiles/files/56251542393.pdfIn PDF document text
    • http://school15-tyumen.ru/f/16363816882.pdfIn PDF document text
    • https://marjoyunlar.com/calisma2/files/uploads/24484311169.pdfIn PDF document text
    • http://netflor.pl/upload/File/rosunoparowimeg.pdfIn PDF document text
    • https://dongphuchuytai.com/upload/files/jesiva.pdfIn PDF document text
    • http://paraglider24.de/pics/fotos/1/file/fowadavikeju.pdfIn PDF document text
    • http://studiogallerani.it/userfiles/files/13511419171.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/161443b77cd176---sawoxeniluvol.pdfIn PDF document text
    • http://krishikhabar.net/assets/ckfinder/core/connector/php/uploads/files/78196541002.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613502b6cf525---doduv.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141aa67441e9---76207598729.pdfIn PDF document text
    • http://fosterfreezesantarosa.com/uploads/files/zimab.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/c5a81069ef92c9d0ea42e6d8fa408d57/67104937963.pdfIn PDF document text
    • http://carshopm.com/js/upload/files/98424950090.pdfIn PDF document text
    • http://footstepfloor.com/upfiles/files/79564955108.pdfIn PDF document text
    • http://steinbach.casawell.tw/userfiles/file/kigibutonisuw.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.

FilenameKindSourceSize
font_00_sfnt_off0000d5e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E0 18128 bytes
SHA-256: f9261b845be52020b5082b10a65b1ccb902814383edfe891a794bb64ff02d611
font_01_sfnt_off00010488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10488 10628 bytes
SHA-256: ca57808cb42e59779214b27ff0694b64fdb8415d3bc8379a68cc7f618416a2ba
font_02_sfnt_off00011caa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CAA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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