Malicious PDF — malware analysis report

Static analysis result for SHA-256 332906fa3b24d758…

MALICIOUS

PDF

100.0 KB Created: 2021-08-26 14:48:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 9ed55d556910519b1053be6a75dc0557 SHA-1: a36c213fddb95f5bdac650f5c5486ef1f0fca94b SHA-256: 332906fa3b24d7582bd11c1cc0fdc77e79ae2c32a62409b692b20f5c6db04c62
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous links pointing to compromised WordPress upload directories and other disposable hosting, forming a link farm. These links likely lead to phishing pages or further malware downloads, indicating a malicious intent to redirect users to untrusted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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://infrive.ru/uplcv?utm_term=scripture+about+god+shaking+the+earth PDF link annotation
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160816bc0c5685---17332183222.pdfIn PDF document text
    • http://cukierniabrzezinski.pl/www/artizam/fck/file/30707249897.pdfIn PDF document text
    • http://fletcherfamilyreunion.org/clients/52745/File/52799517243.pdfIn PDF document text
    • http://parentini.it/userfiles/files/21767683610.pdfIn PDF document text
    • http://hyundaihungthinh.com/uploads/images/files/delida.pdfIn PDF document text
    • https://jahanchart.ir/data/files/file/rukobanileped.pdfIn PDF document text
    • http://momsystem.ru/public/file/72137361728.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/9da65ae9e8993131cf4b4efa0ee256d6/lamezifogo.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c55c3c206d---29808362636.pdfIn PDF document text
    • http://globalsocialwlefaresummit.com//app/webroot/uploads/ckuploads/files/85663880872.pdfIn PDF document text
    • http://www.zywawiara.pl/pliki/sabexitozaru.pdfIn PDF document text
    • https://escaletravel.com/userfiles/files/fidogede.pdfIn PDF document text
    • http://charontrade.hu/data/file/24182458415.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160920f2020620---73477029541.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/c1aca9aab6c8a5f72062bd082d62198d/powobidek.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607a60540729b---tevekojipovisaxepelug.pdfIn PDF document text
    • https://asiastudy.in/ckfinder/userfiles/files/56819171783.pdfIn PDF document text
    • https://orrizon.ru/images/file/61866972273.pdfIn PDF document text
    • http://vkts.se/userfiles/file/2683850289.pdfIn PDF document text
    • http://ckattorneys.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xaresewofejufigevozix.pdfIn PDF document text
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/12d0a709ada2e3990b8d7e621628fa62/56597892053.pdfIn PDF document text
    • http://fuerst-architects.com/uploads/file/1795637980.pdfIn PDF document text
    • http://italiangreyhound.pl/img1/userfiles/file/kemolupifikajuneripowegib.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160749890937db---mamofajativezokukekaba.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b76d911e159---11558753654.pdfIn PDF document text
    • https://travelworld.ro/userfiles/file/75069062931.pdfIn PDF document text
    • http://arci-mp.fr/admin/File/42820153993.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_off00012215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12215 16684 bytes
SHA-256: 10af8e2d40fe755c7ae2c87bc1735585235fdbd10938cbc765791019d9aaef30
font_01_sfnt_off00014d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D74 11152 bytes
SHA-256: bed3ac9b5600b0222bfed992ff6a11c6cfbe5fd12c7c96806174f0c55dfcd54f
font_02_sfnt_off0001670e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1670E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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