Malicious PDF — malware analysis report

Static analysis result for SHA-256 f54bf6fe4b8d224a…

MALICIOUS

PDF

75.5 KB Created: 2021-09-04 21:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0bc7fbd0f13ed8032731faf9ecd78aec SHA-1: 2405f34128d0d656d301e84ea726089e4cc8a0a5 SHA-256: f54bf6fe4b8d224a8d0ab45965c27f5c5d3014295631fbeae6e06eebd30fcc13
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and disposable hosting, many of which host other PDF files. This suggests an attempt to distribute malicious content or phish users by leveraging a large number of seemingly unrelated domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9939

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://too.kg/wp-content/plugins/super-forms/uploads/php/files/471876a511dc3e29ae236744cde01981/loluvagiliforuwifopogixok.pdf In PDF document text
    • https://kanalprofi.at/UserFiles/file/21651194493.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f206cd8a00---fuzubasovi.pdfIn PDF document text
    • https://galerie-louise.be/userfiles/files/donozozi.pdfIn PDF document text
    • http://controldellaves.com/app/webroot/arxius/file/kakowivoz.pdfIn PDF document text
    • https://xo-sound.ru/userfiles/file/46451731711.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/ffbee01a1db4ca45a417eaf78a9e7d72/vofugeso.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/m1775rkuat73p4rffpv269hr64/14982115050.pdfIn PDF document text
    • http://coopmong.com/ckupload/files/zivudota.pdfIn PDF document text
    • https://fertilizerproductionprocess.com/d/files/duxodarujopodu.pdfIn PDF document text
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/l4p9lu0hbkqiapj3pcvffs8616kb6q2b/258706973.pdfIn PDF document text
    • http://xn--80aafjbaeihgganggf9ajkncugh2a.xn--p1ai/pict/file/42702749973.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec223c2b6d---55330829495.pdfIn PDF document text
    • http://designbyjoseph.com/uploads/File/navalivetuwubususopozeva.pdfIn PDF document text
    • https://dnm.tw/uploads/files/202108310516471546.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/160854f4076c91---37634619132.pdfIn PDF document text
    • http://lemfhafamilylove.com/clients/a/ae/ae548a02e38cf20d1222216853584fb4/File/jepagurowekonogitunekafub.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/vj51o0v4sktgn4ks3iaacgsa3j/mezeka.pdfIn PDF document text
    • http://kartywspomnien.pl/uploads/assets/file/palunewemik.pdfIn PDF document text
    • http://mehmetrasimmutlu.com/icerik/file/nupedikimiridenivup.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/gatexape.pdfIn PDF document text
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/e8989b5265d66a00833e7d275757c3fc/vojiwuduwasinavozogujadow.pdfIn PDF document text
    • https://nabil-doukali.com/userfiles/file/lamivimuge.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ed87ce38bf---wikawuxidavulamuken.pdfIn PDF document text
    • http://exhibitionchannel.com/upload/58656195263.pdfIn PDF document text
    • http://cariboohose.com/userfiles/file/webejitomotukogujipuviw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=intronics+2+air+cond+controller+v2+manualPDF 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_off0000be38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE38 10768 bytes
SHA-256: fd5401bf05da238d09e62e32360e4a2d4c26611755d2195c2f8eb04e7c1ce14f
font_01_sfnt_off0000d712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD712 18736 bytes
SHA-256: fd0b0cff1e6f5a3d4650ed6a8b4917b7565e939f1b95c801e98e0db6d9e2bf1b
font_02_sfnt_off000107d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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