Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b2213b3e8f8cca…

MALICIOUS

PDF

68.1 KB Created: 2021-06-24 03:10:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: f32e96104c483f7154dc0fd57557b319 SHA-1: 1ab5ce521f6ba7921915644199085ffe622a1839 SHA-256: e0b2213b3e8f8cca79a91c63e701f5263529c1111bcf60448370b130c9f99ee1
164 Risk Score

Malware Insights

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

This PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised CMS upload directories, suggesting a phishing or malware distribution attempt. The presence of a download button lure further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/b7795d6513ea7d8c8a0bdd034f51c6b9/geribirasuresiv.pdf In PDF document text
    • http://vodnik48.ru/content/file/13325109284.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4bb443667---rimalalofimawowiganezijil.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091c539bd4fd---69807938964.pdfIn PDF document text
    • http://linuxnewyork.com/draft/media//fimuwinozuvadasoz.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/ad5d190f6591f198a36668b31e816b43/25555559232.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16084bc2b4cc97---46027836805.pdfIn PDF document text
    • http://flynewsletter.com/uploads/file/18470961757.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/th054u5uo6pc5te2kbavjq2vv7/xoxaxuvokejexu.pdfIn PDF document text
    • http://kraski-chernila.ru/resources/file/walanapodet.pdfIn PDF document text
    • http://mxm-hosting.nl/img/editor/file/27659463194.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/47042430990.pdfIn PDF document text
    • https://binarbaidservices.com/public_html/userfiles/file/vowupipokitapugubeviwikig.pdfIn PDF document text
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/04ed7ca3997fceb5b05c151447843d01/luwesifupowibesefijabari.pdfIn PDF document text
    • https://momsgardenfoods.com/ckfinder/userfiles/files/vadibawifelonutewez.pdfIn PDF document text
    • http://valaptop.com/ImagesVA/file/legami.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=1+std+tamil+book+new+syllabusPDF link annotation
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA8 5228 bytes
SHA-256: 26a554bee62ae42d174397964a9bb0079ed919b342d21cd8468a8c4b1414f59e
font_01_sfnt_off0000dd7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7B 10768 bytes
SHA-256: 1356b4f0b890c1df600e199d0e9570ed07ce099a54a1e5b951e390c6dc687561