Malicious PDF — malware analysis report

Static analysis result for SHA-256 482f7423b6095314…

MALICIOUS

PDF

101.6 KB Created: 2021-07-22 06:06:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 01426197706dc4480ec06fd870d8bc46 SHA-1: e6ee46cf60bc3ba29b5e282c85535cfbe73482f4 SHA-256: 482f7423b6095314a0b0cc7b9433af7779f0a87757aa58476a00cad7839f99ee
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress upload storage and other disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9853

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://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8ed362873---5472931963.pdf In PDF document text
    • http://logiccpacma.com/ckfinder/userfiles/files/26477409063.pdfIn PDF document text
    • http://alexhofford.com/temp/files/file/zowepuk.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/292770cc91e71c97aa0702ac3d29a871/zofujitozavazabefirereto.pdfIn PDF document text
    • http://elencostruzioni.it/userfiles/files/35190762347.pdfIn PDF document text
    • https://study-abroad-travel.com/ckfinder/userfiles/file/32375476854.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3e3c8d07a---31241559187.pdfIn PDF document text
    • http://tamlaproject.com/userData/board/file/tatoroziwutazosixevok.pdfIn PDF document text
    • http://wawabed.pl/uploads/userfiles/file/koxugomutewabudakiwiborap.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/6d81326dd62a901cfa3cc74a83d04dd0/gunowelabifiregi.pdfIn PDF document text
    • http://kperrylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/panudej.pdfIn PDF document text
    • http://actlogistic.vn/upload/editor/files/49845884157.pdfIn PDF document text
    • http://nextgt.eu/uploads/file/nunijivuxexo.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/eae256873d46beaba9487bcab1c25c47/56815318583.pdfIn PDF document text
    • http://poltinka.ru/userfiles/file/leziguligugirixakijigapu.pdfIn PDF document text
    • http://cuatudongbinhduong.net/uploads/files/bokofekavoxofopuvegup.pdfIn PDF document text
    • https://tonwen.org/userfiles/file/pivijid.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c15aae63a7d---64026998361.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/efbe1ffa3c8de8aa59a5c446446217e5/49269610936.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/demavapudibegojuratoto.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/0mj690l4tls3k5ummv7io1dac1/xawewexigiwirediwetu.pdfIn PDF document text
    • https://clubforeducation.com/FCKeditor/userfiles/file/33655000552.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/0v9i52aglbhtgn6ncvqaktk70c/54691414457.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072723e5bc16---sebekajesewofepetot.pdfIn PDF document text
    • http://whalesart.com/uploadfile/file///2021060604445035.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=the+meaning+of+awfulPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000144a2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x144A2 18328 bytes
SHA-256: d9f5e66163d907df9b2c2f031b8906ab183602eda4757f3e8ef428a9cf922d60
font_00_sfnt_off0000f039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF039 10444 bytes
SHA-256: 150c341285f46697f725f58304a16e577c3ceb242c1a8d3f209392b6bf6d905a
font_01_sfnt_off000107ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107BA 25572 bytes
SHA-256: 23f2e50f53c3dc8f5956a6a99f88866472ee5528603971c5b0e5fc4f6388ec88
font_03_sfnt_off0001623a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1623A 3464 bytes
SHA-256: a8161c2f5ba9235eb51b4fcc43b6bb219725019365cb8d38f9ec25dfe5ce54ff
font_04_sfnt_off00016fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16FB9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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