Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a630e22c6934e10…

MALICIOUS

PDF

78.9 KB Created: 2021-09-23 21:05:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: c22f0d7673298979c3f4698c6782efca SHA-1: ba333a36a38c016f044005be7d45861dd2835540 SHA-256: 9a630e22c6934e10907f5aac001de9ad6c99d33727efabf6794ac28d20faf2be
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are hosted on compromised websites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The heuristic 'ML_NYX_PDF_MALICIOUS' and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery. The presence of external URI links, particularly one with a 'minecraft hd apk' UTM term, points towards a lure to download potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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
  • 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://inwebjor.ru/uplcv?utm_term=minecraft+hd+apk PDF link annotation
    • http://lepetitjaunais.com/userfiles/file/ruranekomipifopemaru.pdfIn PDF document text
    • http://cmtoolsrental.com/user_img/files/39412829285.pdfIn PDF document text
    • https://takipbizde.com/calisma2/files/uploads/dujatixujosa.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614170ff4d66c---95668821412.pdfIn PDF document text
    • https://www.funes.gob.ar/ckfinder/userfiles/files/jusafagilutowaxewaxu.pdfIn PDF document text
    • https://keongracun.org/contents/files/gitazakokaz.pdfIn PDF document text
    • http://pushgroup.lv/userfiles/files/tojibigebevefuverikagepa.pdfIn PDF document text
    • http://deborahmayerlawoffices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/51335009924.pdfIn PDF document text
    • https://www.leadercaravans.com.au/application/third_party/ckfinder/userfiles/files/pumodewija.pdfIn PDF document text
    • https://rougezenekar.hu/files/file/pujexevewivejikaw.pdfIn PDF document text
    • http://ck-kutnahora.cz/gais/image/file/53666784914.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/rrbespkqkqfnm0fqj5v561f74j/dejogibegobovojizagudol.pdfIn PDF document text
    • http://burattinojatek.hu/userfiles/file/naxovux.pdfIn PDF document text
    • https://alsharqcc.com/userfiles/files/mejosazafuzonamezevez.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/57d8cca7c1cddbedf0bac8bb24c2840f/lopanurukejoxatoge.pdfIn PDF document text
    • https://amgaa.org/temp/files/86215565712.pdfIn PDF document text
    • http://www.prodomasa.com/ckfinder/userfiles/files/69528279299.pdfIn PDF document text
    • https://bursakaynak.com/userfiles/file/wufaxarekamivotubananimu.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614214e3b671c---59686187540.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16135c9f112509---70418976404.pdfIn PDF document text
    • https://institut-arabe.org/ckfinder/userfiles/files/kipureze.pdfIn PDF document text
    • https://detmers-kontejner.hr/files/13732680157.pdfIn PDF document text
    • http://newtarrytowndeli.com/uploads/files/42361201535.pdfIn PDF document text
    • https://soportedevida.mx/ckfinder/userfiles/files/30762152890.pdfIn PDF document text
    • http://abwingsva.com/uploads/files/kanazefetijige.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_off0000d26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD26E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ea85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA85 10468 bytes
SHA-256: 4cbd7359739803b23f60659b6cffdc246d9fe14c062f8d36999e283c93732ebc
font_02_sfnt_off00010238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10238 17140 bytes
SHA-256: f6112dc9b5283de34cd33f690b7c3147d1595c2350f7ba2d259608f972460f1e

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