Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aaae4cb2b0426c9…

MALICIOUS

PDF

70.5 KB Created: 2021-09-14 16:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e03976f19f34eb310e334717c646a4ae SHA-1: 37df94ac0070e79a77071d0a1e50ddc2e3a208c0 SHA-256: 9aaae4cb2b0426c9f619398b06d7492fbc6e5fc6b5ffdcc53927dfb80d50457a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to various domains, many of which appear to be compromised or disposable hosting. The primary URL suggests a lure related to 'gta 5 online xbox 360 money glitch', indicating a potential phishing or scam attempt to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9885

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://archism.ru/uplcv?utm_term=gta+5+online+xbox+360+money+glitch PDF link annotation
    • http://cuanhomkinhtoanthang.com/media/file/47324638471.pdfIn PDF document text
    • http://japan-railpass.info/images/blog/file/4086434395.pdfIn PDF document text
    • http://dentalweek.eu/userfiles/files/68477248638.pdfIn PDF document text
    • http://aylabawadi.ae/userfiles/file/74924025351.pdfIn PDF document text
    • http://kokocurry.gm/userfiles/file/44730291139.pdfIn PDF document text
    • http://greenflameenergy.com/userfiles/file/zinemozizalagotezak.pdfIn PDF document text
    • http://xn--12cmi2byac9cdhd0hra6d7bxkwbgj1gch.com/user_img/files/zoxadunonupodufanakuwiki.pdfIn PDF document text
    • http://kajo-frings.de/userfiles/file/75769370171.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/vepifosonof.pdfIn PDF document text
    • https://drakbera.com/ckeditor/ckfinder/userfiles/files/taxugumumukixaxet.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/okpchkcva9pr07j27qvi3f92v0/kufizuj.pdfIn PDF document text
    • http://tsraccountants.nl/mailing/images/photo/file/82036278910.pdfIn PDF document text
    • https://propage.q-cloud.net/upload/ckeditor/pages/files/33683239005.pdfIn PDF document text
    • https://actionsporting.com/userfiles/files/12378743345.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/76576ce7b6b5ddc06da146b3a7088c40/zuborujinazeda.pdfIn PDF document text
    • http://vino-charlie.cz/userfiles/file/vusekaganuvamenoges.pdfIn PDF document text
    • http://tvoirostov.ru/ckfinder/userfiles/files/zodufege.pdfIn PDF document text
    • https://z87992961.com/upload/files/20210901064159.pdfIn PDF document text
    • http://szigmetal.hu/editor_up/fidipud.pdfIn PDF document text
    • http://3bbb.fr/ckeditor/upload/files/49045005420.pdfIn PDF document text
    • http://kalmi.ru/upfiles/files/82604062259.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/161329b9657c2a---35464830162.pdfIn PDF document text
    • https://terminal.hr/userfiles/file/64366771061.pdfIn PDF document text
    • https://rowadalbyt.com/userfiles/files/soligowowejonutobo.pdfIn PDF document text
    • http://viswinkelindex.nl/images/uploads/67698057003.pdfIn PDF document text
    • http://trevelci.ru/ckfinder/userfiles/files/binatixu.pdfIn PDF document text
    • http://lohoithaiduong.com/uploads/files/23677782257.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_off0000b56f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB56F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cd86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD86 11400 bytes
SHA-256: 170c8d4d6376a7410d7269f51993f640665a327bc1f09d0d141e62386cd38fdc
font_02_sfnt_off0000e845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE845 14312 bytes
SHA-256: b85d8fc9619b66e5633616c1ec2c472821103b1f7f9445039c78780aad588590

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