Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b7481639e4e215…

MALICIOUS

PDF

90.6 KB Created: 2021-06-25 21:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: fd9c866461513cdc571c9b0ba242302b SHA-1: dab6b5a1d520704d5fe58a6d86812df9d20d8cf0 SHA-256: b0b7481639e4e21508601fa8ae69a61603817cb7927b40b644215054013a0885
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan threat. It contains a link farm pointing to multiple compromised WordPress upload directories and disposable hosting sites, suggesting an attempt to redirect users to malicious content. The presence of urgency lures further supports a phishing or scam-related attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/5d01abf7f5b0ede19101a36e2909b5cd/44940528894.pdf In PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/d07a91e90ffdc3ee6f0a01cce94638e0/geluf.pdfIn PDF document text
    • https://cbdc.co/uploads/ckfinder/userfiles/files/kubosulire.pdfIn PDF document text
    • https://ukdirectremovals.com/wp-content/plugins/super-forms/uploads/php/files/bc545db4efce6d9d0576e0a78869fc80/39733241240.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160790e2b83285---xalujapobabot.pdfIn PDF document text
    • http://aeronautike.com/userfiles/file/paxizofumiwawaxisemonilab.pdfIn PDF document text
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/6ded443892cfa2e5c993a5d68cb374e4/medudalasulasumon.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/wokem.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a01bef402c---25290828450.pdfIn PDF document text
    • https://hotnews.md/upload/userfiles/files/8161257321.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/1c5968ec02008a2f48707b8834bcd1fb/78387464540.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/imkf9ig25t0vpf4cbb2hq1fu23/17698929985.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9f855b766---rodofosekixok.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/e542c83d133cf74b454a9a5320c38820/gofadekovisodapuwo.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/fixululojovogititeju.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/271aeb687d65c2fc630451f1fc4fae6a/lamawotevazufazemakifaf.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/16071d9d9b76e4---xugekavulukewod.pdfIn PDF document text
    • http://xn--szabowski-tub.pl/userfiles/file/78770017076.pdfIn PDF document text
    • https://dichvumayphoto.vn/webroot/img/files/radebuwugolupomezudifuri.pdfIn PDF document text
    • http://nsdadventist.org/FCKData/file/jabidodixiwefilafekuga.pdfIn PDF document text
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/rekunimijigiwitijudikiw.pdfIn PDF document text
    • https://simplehome.ro/ckfinder/userfiles/files/896537616.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=topple+board+game+rulesPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001028d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA4 10644 bytes
SHA-256: a08f62f669f8f427eb54bf976a74c7a2a58128cad3817a17cac4663bd7d99950
font_02_sfnt_off00013292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13292 16536 bytes
SHA-256: 860c4f18674772ceeb36b7e3ab656f6660c9f28ca3691ce472ffcca5e3a18353

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