Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e0ad555f6a8a01…

MALICIOUS

PDF

85.0 KB Created: 2021-08-07 20:32:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 970b57f0902a0f6d2163797f9e8dcbd8 SHA-1: 7fb54e5dcfde2c965155004ea1862ffc4dd09598 SHA-256: 69e0ad555f6a8a01ba2dd42b82a83cf2cf1818952fb7dc3b0f5241d994daf33b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute malicious content or phish users. While no scripts were directly extracted, the PDF structure and URL patterns are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608d298e27adf---fepesanifeje.pdf In PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/amprdebpk9o39ooea9kmoukonm/88260885903.pdfIn PDF document text
    • http://usarsenal.it/userfiles/files/panobevowobarilafalabu.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/pedejujubilala.pdfIn PDF document text
    • https://nidi.mk/ckfinder/userfiles/files/botifikodoruvinamezivafig.pdfIn PDF document text
    • https://q-web.ro/wp-content/plugins/super-forms/uploads/php/files/0ed78o3jmk7p0fc260ge0t3sl1/18473173094.pdfIn PDF document text
    • https://cafesca.mx/ckfinder/userfiles/files/volavozometokoze.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610313038e229---jadowaka.pdfIn PDF document text
    • http://younewstoday.com/task/userimages/file/movogapaw.pdfIn PDF document text
    • http://accronline.com/userfiles/file/2748617911.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16095244a47c61---xakija.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/acka4ibppe49h92di9qrc4n740/35390480360.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/b1e8137c0f980a5daecc1c3ca5a46371/juratawafoborapobusa.pdfIn PDF document text
    • http://ginzaoakland.com/uploads/files/tepadegebekowunopeluluf.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16080b5aa0e973---javutupepofejewelametira.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a7943311c8a---rutagepafuk.pdfIn PDF document text
    • https://watertorens.nluserfiles/file/25257865653.pdfIn PDF document text
    • https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/8471e693f78066ae8d7d089747c1bcfc/motopiguxepulemewapilozug.pdfIn PDF document text
    • http://bwc.lt/i/98090280109.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b5f17f149b---tivezasojupapovujul.pdfIn PDF document text
    • https://agatanorek.com/files/file/55200823716.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/kivorefota.pdfIn PDF document text
    • http://veronikavilla.hu/userfiles/file/92761486490.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=how+to+use+purposive+sampling+in+qualitative+researchPDF 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_off0000e760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE760 11208 bytes
SHA-256: 95367e0770dc9211781d6fdc4108519d95fc6d43fa06cd42e8b3010cf79d82e0
font_01_sfnt_off00010121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10121 17312 bytes
SHA-256: 468d5f6acb70c474ad66b4b7430bb7ece7316b0723659238501fbce019c41936
font_02_sfnt_off00012e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E04 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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