Malicious PDF — malware analysis report

Static analysis result for SHA-256 301bd07aba89bebc…

MALICIOUS

PDF

79.5 KB Created: 2021-09-19 01:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 0bb399b133068a4edcae0cfd1ff636b2 SHA-1: b428fd10b2e0a5c2470a45c24dbcddb5af0b4aa5 SHA-256: 301bd07aba89bebc71ac6a2e7689152c24a2a6ca13d35c73979a6a6f44012ce0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a significant number of links to various domains, many of which appear to be compromised or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://oniceh.ru/uplcv?utm_term=kgf+full+movie+in+malayalam PDF link annotation
    • https://pagodatalk.com/_UploadFile/Images/file/80233324166.pdfIn PDF document text
    • http://labonscafe.com/userfiles/mipekijexofamulusuxumojow.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16134a583b817e---39224257413.pdfIn PDF document text
    • http://tangiahoang.com/skinkorea/Images_upload/files/90589352434.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613d6eb7b83e3---gamirojifis.pdfIn PDF document text
    • http://meta-min.com/files/39932796087.pdfIn PDF document text
    • http://materialdeestudo.top/userfiles/files/85735562073.pdfIn PDF document text
    • http://studiobonvino.com/userfiles/files/borunumewofesi.pdfIn PDF document text
    • https://liftsystems.ro/LiftFiles/file/momulamipazonavetolixid.pdfIn PDF document text
    • http://sunnyten.net/userData/board/file/debumi.pdfIn PDF document text
    • http://drkoopman.nl/cmsimages/file/lulodevijamawib.pdfIn PDF document text
    • http://blekinge.boj.se/uploads/userfiles/files/98394533791.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/b149935618aaabe5b755111408d4c77e/60423849375.pdfIn PDF document text
    • http://gartenbaukoeln.de/uploads/files/59858694996.pdfIn PDF document text
    • https://www.ftha.org/admin/ckfinder/userfiles/files/pamixevijinuvar.pdfIn PDF document text
    • http://quincy.pl/ckfinder/userfiles/files/piwebilitibifabukap.pdfIn PDF document text
    • https://carpenterstouchnj.supremeroi.com/FCKeditor/file/78190686584.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161466051f2f70---nonafozuj.pdfIn PDF document text
    • https://ijpdua.com/contents/files/bevix.pdfIn PDF document text
    • http://xn--80aatg4aaaddkhfhbf3evf.xn--p1ai/ckfinder/userfiles/files/rozilurizusetede.pdfIn PDF document text
    • https://illustrations.noche.fr/images/files/zelul.pdfIn PDF document text
    • https://cochleartudaskozpont.hu/files/kapixizoxunumu.pdfIn PDF document text
    • http://cartopack.be/Images/file/bunutamibusilurazetibo.pdfIn PDF document text
    • 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_off0000d2e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E6 10460 bytes
SHA-256: 391f8d0fee2f586ac6af0cb966ded4988a9539bc9ba245a6631f17095baafc4d
font_01_sfnt_off0000eaa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA3 17628 bytes
SHA-256: 4df6df905bdb962a1b68d2ab712a3febe6d4af657e61634c575163e934c12a70
font_02_sfnt_off00011821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11821 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1