Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed446c5a2d4ca8d…

MALICIOUS

PDF

95.8 KB Created: 2021-09-11 03:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 80c751525d2973ee390b2ca99928ab4d SHA-1: 3b39d27c3c5300b3f6b9937e8768fab942053136 SHA-256: 2ed446c5a2d4ca8d7bc3610cebed4b3cdc8c017710e09e49e3baef506ba3570b
154 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple URIs, including one pointing to a raw IP address, indicating an attempt to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or to serve a second-stage payload. The presence of embedded JavaScript suggests it's used to facilitate the redirection or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9888

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://hakanhurdacilik.com/userfiles/file/pigoxomerawufoz.pdf In PDF document text
    • http://chromowane.com/userfiles/file/xosut.pdfIn PDF document text
    • https://danfort.lv/userfiles/file/jipimeguzodoguxeb.pdfIn PDF document text
    • http://yeongwonenc.com/userfiles/file/nasilojolasit.pdfIn PDF document text
    • http://exdebt.bg/userfiles/file/53777141677.pdfIn PDF document text
    • http://gonvvama.net/filespath/files/20210908002846.pdfIn PDF document text
    • https://qualitygums.com/userfiles/file/40386815420.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f0815d15a4---bomazawinogakezixewosor.pdfIn PDF document text
    • http://life-homeshop.com/asset/uploads/files/80425156716.pdfIn PDF document text
    • https://ozanetiket.com/TasarimAcarnet/serhali/upload/files/35298440723.pdfIn PDF document text
    • https://sibiucuratenie.ro/fckeditor/userfiles/file/84690148715.pdfIn PDF document text
    • https://landtop.com/filespath/files/20210901050109.pdfIn PDF document text
    • http://progettarecasa.com/userfiles/files/bilulejixesipixaxixe.pdfIn PDF document text
    • https://xn----8sbcehyodmtf1czh.xn--p1ai/userfiles/file/fituren.pdfIn PDF document text
    • http://recepti.plovdivweek.com/js/ckfinder/userfiles/files/73423719911.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/d419278f63ec21e458dc2310577b049b/zukoraxalaxaz.pdfIn PDF document text
    • http://www.lalorraineperdue.com/documents/48587145018.pdfIn PDF document text
    • http://satisfytech.com/ck/upload/files/kedawur.pdfIn PDF document text
    • http://chinahongji.com/d/files/83707405265.pdfIn PDF document text
    • http://aczelzalog.hu/tmp/68054737648.pdfIn PDF document text
    • https://hobbyschuurtje-webwinkel.be/images/userfiles/file/560602077.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16139c0ec25502---95698724640.pdfPDF link annotation
    • https://istanbulbalbir.com/upload/ckfinder/files/lubururowu.pdfIn PDF document text
    • http://okeefesreef.com/ckfinder/userfiles/files/balikujivimoxafubijekoj.pdfIn PDF document text
    • https://petala.gr/userfiles/file/xovid.pdfIn PDF document text
    • https://artedelvalle.cl/gal/files/file/38800685837.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=fifty+shades+of+grey+123netflixPDF 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_off00010dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000125e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125E7 18996 bytes
SHA-256: 5daf558dd601563c055b234b86632d23cdcd2f274a5a1e9a721d5ac88965d371
font_02_sfnt_off00015784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15784 11168 bytes
SHA-256: 786e47c82a5141ec2d7f6f92a82db98e26921b19d61fb5ca82c7eaa1b571861d

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