Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bde407682d926ed…

MALICIOUS

PDF

84.3 KB Created: 2021-09-13 10:58:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: eccbe853b859aa7581bb2aceb22c1330 SHA-1: fba24cce4f4d27a1b33fb03fc2c0b50d736e059e SHA-256: 0bde407682d926ed8ccf17d79470d10ebe5aaad4846d6020cef692ccad9c250c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable domains and are likely used for phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests a malicious intent to redirect users to potentially harmful sites. The ML classifier and ClamAV detection further confirm the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://philabc.ru/uplcv?utm_term=apps+to+move+from+android+to+ios PDF link annotation
    • http://nhac.ditimchanly.org/Images_upload/files/kejaxuzurexu.pdfIn PDF document text
    • http://eternoohydro.com/d/files/rowugofevu.pdfIn PDF document text
    • https://habibitoursegypt.com/ckfinder/userfiles/files/4006487309.pdfIn PDF document text
    • http://fructusartis.com/i/File/58557993890.pdfIn PDF document text
    • https://kaptenhoki.org/contents/files/lakitevilafex.pdfIn PDF document text
    • http://rld-carbon.com/file/39472839575.pdfIn PDF document text
    • https://vnjhanoi.com/upload/files/lofota.pdfIn PDF document text
    • https://5of7edwardstreet.com/assets/media/files/25002063354.pdfIn PDF document text
    • http://luisacortesearchitetto.it/userfiles/files/99327844711.pdfIn PDF document text
    • http://cbcom.fr/ressource/site-image/files/detawexijomofonepol.pdfIn PDF document text
    • http://allamericannursing.com/userfiles/file/zalowegutoxodukitovaronax.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/16137488a3c7f3---xifarefovutokudemasip.pdfIn PDF document text
    • https://lifesmart.lifesmart.ro/ckfinder/userfiles/files/voweru.pdfIn PDF document text
    • http://italianopizzeria-pg.com/uploads/files/jaxijaturewemogas.pdfIn PDF document text
    • https://renault-service.com/userfiles/82317579440.pdfIn PDF document text
    • https://anhhuynoithat.com/asset/files/wikebisekijesepef.pdfIn PDF document text
    • https://byocamacho.com/ckfinder/userfiles/files/ziposanajer.pdfIn PDF document text
    • http://palmdale.thepokeluau.com/uploads/files/nigujajupikiwovikopax.pdfIn PDF document text
    • https://marwaautorepair.com/nbloom/fckuploads/file/51684775448.pdfIn PDF document text
    • http://kirche-treuen.de/UserFiles/File/fosigeze.pdfIn PDF document text
    • https://bahceneryaman.net/public/content-images/files/77158869404.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_off0000e363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE363 10660 bytes
SHA-256: a7344e4c83362fe735f19615a81034e41839bde6e2fad29f58d50bbc653cd5d9
font_01_sfnt_off0000fbdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000113ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113ED 18860 bytes
SHA-256: eac41cda1739fcaa826bea4326c8fe92eec35e334c3a3e2d9d3f790a9a6e137c

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