Malicious PDF — malware analysis report

Static analysis result for SHA-256 95a254d188b07ec3…

MALICIOUS

PDF

129.0 KB Created: 2021-07-28 02:33:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: cf6eb8546b2f481cc9950840a8c72dec SHA-1: 903ec8d490a2e87add9d3d1f48e304223a1187e2 SHA-256: 95a254d188b07ec3ea937ea0446cee9f1059073d30013450af8dab3ee92773cd
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to redirect users. The presence of multiple external URIs and a link farm heuristic suggests the primary goal is to direct users to potentially malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ac03e78db04---nitegedafanene.pdf In PDF document text
    • https://mimpiindah1.com/contents//files/wuvutijizukejawobar.pdfIn PDF document text
    • http://houselandia.ru/files/jipix.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/ee0d857c7bfcb980e8af49d7d3708f62/gelikinapalujagebufuwul.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086023a50409---86836453515.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/35799246933.pdfIn PDF document text
    • http://abovomedia.hu/_user/file/53797080566.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160821fafbd30e---fuvokujixovezaw.pdfIn PDF document text
    • http://groupkaishan.com/d/files/belumimageg.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c605c42b06---novuwipasonefarenogani.pdfIn PDF document text
    • http://poslovniimenik.net/firme_data/files/derodovuvot.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160a7413cc1cfc---12412094675.pdfIn PDF document text
    • https://kasihpaham.com/contents//files/gutilaminivutex.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/ddd99649f8670f185911432eab531c56/51642630615.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/xamidividirudamufuw.pdfIn PDF document text
    • https://alshaabcoop.com/userfiles/file/98896884947.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/ijmspg0tgmgdt0l4p065c3epd7/90670142168.pdfIn PDF document text
    • https://autoteam.in/ckfinder/userfiles/files/33443362127.pdfIn PDF document text
    • https://rlmahtani.com/userfiles/files/23779053008.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/16094d4d3b2bdb---fakiwisufaxof.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/60216526051.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=how+much+does+executives+get+paidPDF 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://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_off00019595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19595 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001adac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ADAC 11056 bytes
SHA-256: d0bf8cf40e8705fa88f2f876ec195b1c873d9a708bbd6648fad3e73ca5e95eff
font_02_sfnt_off0001c753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C753 17756 bytes
SHA-256: 87cf7444e0eb2e4351427fc3ae3eb6fb2ff193a7ca4564625e3cf4b161031340

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