Malicious PDF — malware analysis report

Static analysis result for SHA-256 1070eb478e2c5b8b…

MALICIOUS

PDF

89.9 KB Created: 2021-09-04 05:43:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 9aee471048531d033e6f68cc4806337c SHA-1: cf10145ffaaa6ab604dacddeac25c9db2ecb3ca5 SHA-256: 1070eb478e2c5b8b09ad335168bba6be15668639693adfc67c7b191169cbcb48
156 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating it likely exploits PDF vulnerabilities. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs are designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://drrajanmahtani.com/userfiles/files/89958271869.pdf In PDF document text
    • http://matstravel.ru/userfiles/file/mapulesu.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/f38e6e96c8efaab037ef11ed2aebc035/puribetudamilu.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/24721f1f4409e1d59b65f6fb3db208a6/87908099446.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a1e723a6482---77564800897.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a10608a4061---vunufirizoxaredivotaneg.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c01f757033d---57061919343.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078e7918d92a---tikozopitirefopujasane.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc8eb9d4e33---21503627332.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079c4df4fd91---busagazinin.pdfIn PDF document text
    • https://citronixdeflection.com/nbloom/fckuploads/file/sovonivavexure.pdfIn PDF document text
    • http://e-skala.pl/userfiles/file/51973925272.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f181dd2ee2---38191751834.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160e8bd4a1c6a3---pajavajiz.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607568959895b---65217334460.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609e0fee7db66---dupuridijalenabif.pdfIn PDF document text
    • http://baschin-heizung.com/meineBilderAlbertGrundschule/file/11838470107.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/8027a1db61401d36e9250abeb3fcb020/salipanumamida.pdfIn PDF document text
    • http://noahjohnsonsark.com/clients/e/ef/ef24418f2336b9480f3353ee42fa3f58/File/dewemurejanumelufuviki.pdfIn PDF document text
    • http://alliance-ltd.com/userfiles/pidurek.pdfIn PDF document text
    • https://www.zochrot.org/ckfinder/userfiles/files/gexeb.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/46m0htmh6r8npmm0l0460egvj1/nimodurolonedunurefejivov.pdfIn PDF document text
    • http://f1-rennsimulatoren.de/userfiles/file/vimilumebedugenufokunuj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=surrendering+by+ocean+vuong+pdfPDF 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_off0000f728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF728 18916 bytes
SHA-256: d592d9881c11daea6a26c60f47d9b543a9eb789984daba902f7d6dce3233e7cc
font_01_sfnt_off000128df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128DF 10980 bytes
SHA-256: 08c681ab8fe9e308a4bbd3c47368cdf4f28b3650f393407ffb236b8cb4052364
font_02_sfnt_off00014214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14214 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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