Malicious PDF — malware analysis report

Static analysis result for SHA-256 9704cbc2376cb4d0…

MALICIOUS

PDF

93.0 KB Created: 2021-06-25 22:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 208469d78270bd247376bcb6105dab20 SHA-1: 32d2cf0c5f8337eaa14342fcf65ae9ba8a490b78 SHA-256: 9704cbc2376cb4d0436ba4e1a0ced0396be8c831fce15b102301b9093f5041c3
236 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. It contains numerous links to compromised WordPress uploads and disposable hosting, likely serving as a link farm to lure victims. The document also contains instructions to disable security software, a common tactic in malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://huntic.ru/uplcv?utm_term=call+of+duty+warzone+cheats+xbox+one
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c940e9bd5c6---86251024126.pdf
    • https://campermagazine.tv/public/file/kajosewosonitener.pdf
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160804cad7f08f---97664520764.pdf
    • http://planetamama.ru/files/file/92612170168.pdf
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/oqcctngif0vp6nohbdf1je54q9/24354993074.pdf
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b88643c4f1---15401256481.pdf
    • http://szyldkj.com/luodan/images/userfiles/file/sojowosimidugirepo.pdf
    • http://www.truca-taoules.com//ckfinder/userfiles/files/63839871208.pdf
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/07ccf348c57065e3cedf668dee6e256e/jaruto.pdf
    • https://www.nuyew.academy/wp-content/plugins/super-forms/uploads/php/files/b523ae5f0bd1cebb4f0ce131a577c760/89628288817.pdf
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/63076192373.pdf
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d63b505939---bekufuluzaxapu.pdf
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/kmlr9r5abdshen1et6agnpgu43/17254934421.pdf
    • http://delvalle68.com/clients/54584/File/92573940796.pdf
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/tctms1e7opmtkvta8b3ph8enn4/63320381298.pdf
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/b026f239f7a9967c691ffec943a79068/pazobatomomosadoki.pdf
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/8e7194c331b32373a5670186dcd41d1a/8016448865.pdf
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160922a2ff282c---xurobenomolefedor.pdf
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bde0540961---pelapas.pdf
    • https://planet-for-events.de/userfiles/file/selisararurupurepegadutex.pdf
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1944469930---86905487363.pdf
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/30t3l8ss2pcggvg86ol5sgulv5/jorewajubulagibevukop.pdf
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2a218ec9b---60838723471.pdf
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080e6bb5856b---pebagibusugavalir.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_off000104eb.bin
878c8b44c7dc815baa722850acbd2345aa098c843549a4e9c5e54100883943fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x104EB 17640 bytes
font_01_sfnt_off000132ef.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x132EF 16792 bytes
font_02_sfnt_off00014b06.bin
09251d8d7007fbf8b1a5f08b3399c4e5955910d6ffcb342dd5d4c6cd515b926c
pdf-font-stream PDF embedded font (sfnt) at offset 0x14B06 11112 bytes