Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c470c0d3806d0ce…

MALICIOUS

PDF

75.9 KB Created: 2021-09-06 23:18:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 84d62f9b8528dc844baee4de65d0dfb1 SHA-1: 614be9ac29e6be163568f47e3cbf15f31d039530 SHA-256: 9c470c0d3806d0ce651a21b60cf18c9f6b3ab4c4b33dc4805d949f0ac5e4d5fd
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting it functions as a link farm. The primary goal appears to be directing users to external, potentially malicious websites, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/f8c2a5e91f86744d918b1ccb79283026/27640686343.pdf In PDF document text
    • http://lucchetta.net/userfiles/files/kijaxasisosafamekow.pdfIn PDF document text
    • http://berallebags.com/UploadFiles/FCKeditor/20210601220611.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/6159073662e3b073fc333464e7095e5c/towevarevumisagaxutonediw.pdfIn PDF document text
    • https://remont-bez-zabot.ru/files/file/17992909850.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1779ea09a9---vununalalawikej.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/lutorogida.pdfIn PDF document text
    • http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160894c808e4c7---51652403106.pdfIn PDF document text
    • https://pointswestliving.com/ckfinder/userfiles/files/83881378540.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160b87dcde5067---pamesezumigiruwebe.pdfIn PDF document text
    • http://weberstellen.ch/userfiles/file/40591614734.pdfIn PDF document text
    • https://claudiodituri.it/uploads/81582943950.pdfIn PDF document text
    • http://centrumbiznesurawicz.pl/userfiles/file/78794674228.pdfIn PDF document text
    • https://nabsangram.com/userfiles/file/foxodogiwuw.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160a94ad7b1231---12396074957.pdfIn PDF document text
    • https://preprodpcb.com/userfiles/files/26941205661.pdfIn PDF document text
    • https://anukulagrotech.com/userfiles/file/46179598655.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/s934m0l5k2rh4m1of5okfeock5/jotamupixotu.pdfIn PDF document text
    • https://bandai-k.com/userfiles/file/neribule.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/juzovu.pdfIn PDF document text
    • https://lenaoyunlar.com/calisma2/files/uploads/72354302211.pdfIn PDF document text
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/1b9465407a85f1f8171a8a6f568168bc/33723805833.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/161304a499f970---10112301783.pdfIn PDF document text
    • https://memoservicesrl.it/file/50197076752.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160fd897b31c93---tupijokovakaxewukufob.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=deep+thinking+garry+kasparov+pdf+download+freePDF 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_off0000c170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC170 17900 bytes
SHA-256: b79ac410b73f1486f9cacf2e11953accc5d5224c31a5f02f565c4d635be269d1
font_01_sfnt_off0000efaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000107c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C1 11136 bytes
SHA-256: eb43851a2136ea9006aefcec2c2bb984c8c85c53c070fcd55c2532282ee21184

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