Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa12a2c332fb9bf8…

MALICIOUS

PDF

83.9 KB Created: 2021-09-06 20:19:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a86a4e81f646a4e330497244a61aa825 SHA-1: c4d4c06a29773709c0b3930ad49bd467a014febf SHA-256: aa12a2c332fb9bf889ee8879606efdd30b80d7375ec277780d84d36d1a353efc
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains numerous embedded URLs pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. No scripts were extracted from this sample, but the overall structure and URL distribution strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://queure.ru/uplcv?utm_term=days+of+wine+and+roses+pdf+real+book PDF link annotation
    • https://valdisieveshopping.it/file/78429892884.pdfIn PDF document text
    • http://allnatureint.com/userfiles/file/43074580938.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/d1a83c781e3b7ebf2150f0400a5c718c/fifelanomunifowajuxadefa.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf0f7c532e---kedepiso.pdfIn PDF document text
    • http://orthodoxvaidikasanghom.org/userfiles/file/sozagobuvusitidasop.pdfIn PDF document text
    • https://yukkumpulgroup1.com/contents//files/64481600435.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a81b1e8a2fc---gefizomubotijekujatoxiwaw.pdfIn PDF document text
    • http://elateridae.com/images/FCKeditor/file/94137303862.pdfIn PDF document text
    • https://smsenerji.com/resimler/files/53459200526.pdfIn PDF document text
    • https://2-view.org/home/view/public_html/ckfinder/userfiles/files/ratew.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c43f4889b18---4918797899.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/pg0q973i0uvl0t061v69cnvev1/72528071093.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a2bb24e380a---jugidofutizu.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/b2dbeaef410daeedba2d7bad05406aa2/gazipe.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb0deabc9e4---dibelar.pdfIn PDF document text
    • http://pincodehub.in/userfiles/file/3375983043.pdfIn PDF document text
    • https://www.letspassdriving.co.uk/wp-content/plugins/super-forms/uploads/php/files/cj8vamfohodnt8ns70am943or3/vaxujojolufifisavavofob.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5835c4386---rixasu.pdfIn PDF document text
    • http://jiendurancecoaching.com/ckfinder/userfiles/files/95818262820.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c25ae81fb04---80439731027.pdfIn PDF document text
    • http://topimmigrationlawyer.org/ckfinder/userfiles/files/bevumanepadano.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1d0ad55914---relapikepogotiguga.pdfIn PDF document text
    • https://ceramicasvillaflor.cl/UserFiles/File/kujapuforutesojulo.pdfIn PDF document text
    • http://przychodnia-felinskiego.pl/uploads/editor/file/dumuwobakexetaf.pdfIn PDF document text
    • https://mimpisiluman.com/contents/files/wodesizove.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_off0000dfc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D9 18484 bytes
SHA-256: 406755633e5c262aebe9a4374bbd04458bbc0499e3af783f95aafe456f0281eb
font_02_sfnt_off000128f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128F1 10828 bytes
SHA-256: 4e5c66e33a113072acfefa298846e38493a67f348435a9db21cc1d824e5c42ab

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