Malicious PDF — malware analysis report

Static analysis result for SHA-256 80132574c0e2f4cd…

MALICIOUS

PDF

88.4 KB Created: 2021-06-27 20:03:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 90685d291b8e42cc991e46e7eecab86a SHA-1: c49e825ff1da227f8dd24e9ec6866f2dfe6101f5 SHA-256: 80132574c0e2f4cd5b127f39a3f98bb272e5d3560c273171fdf51e99526cf1b5
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and does not provide clear textual lures, but the overall structure and URL distribution strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 http://angelojrobles.com/admin_initial_test/userfiles/file/58782844006.pdf
    • https://lesfeesdelhetre.fr/upload/files/48946406997.pdf
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8ca80af6f---vodofaxetinavagate.pdf
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a7e206ed476---febigabizonutevosusi.pdf
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609c8b8adeda1---84707831264.pdf
    • http://msinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/86487622545.pdf
    • http://servmed.net/userfiles/file/zibadapegiribala.pdf
    • http://s-moonlight.com/CKEdit/upload/files/lafuzewekugawuviwes.pdf
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d396bc8d9b0---1997113205.pdf
    • http://sushikyototogo.com/uploads/files/suluvipunulefo.pdf
    • https://narimasu-chintai.net/jcfiles/file/fogesenipusapigi.pdf
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d488468bb6---13317132698.pdf
    • http://cesishotel.com/res/wysiwyg/file/legogisepaxumigumi.pdf
    • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/d1f938009eaf6f4897ea957e97cfe805/fesosudife.pdf
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b30fe052aa---14387961334.pdf
    • https://cottonweb.net/userfiles/file/furogetojogu.pdf
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/6caf92890131da658d57c6891008588c/92361197384.pdf
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/8611f1e7d86b0b9e3ca581c0a526b836/molopigezotuviw.pdf
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160898a3e744f7---ririfik.pdf
    • http://fullcolorspandoeken.nl/userfiles/file/sibokalugarumav.pdf
    • http://www.bandungmesin.com/file/libuzujavawakosox.pdf
    • http://nanobubblevietnam.com/uploads/userfiles/file/zifike.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=list+of+acts+passed+by+british+in+india+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7c7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C7 16792 bytes
font_01_sfnt_off00010fd9.bin
c2ee41945907a289c1b3e10b9b29dacf5d8410bdf4179de476de80d25243310f
pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD9 16664 bytes
font_02_sfnt_off00013b35.bin
a36a1d59c22a164ff9d17fea38ad5fe662cdcf71021ae014415e38fa2f03244f
pdf-font-stream PDF embedded font (sfnt) at offset 0x13B35 10884 bytes