Malicious PDF — malware analysis report

Static analysis result for SHA-256 324dbcf0d81d69f4…

MALICIOUS

PDF

78.7 KB Created: 2021-08-26 06:58:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 703271ad77f2b9884fcb8a1905aa6571 SHA-1: b80d98da63a318baa5063dc0d79262b8aae9a9c8 SHA-256: 324dbcf0d81d69f416df658d54fb8cacdaa8f4b526a3716801a6f2bcd55c50f5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, possibly leveraging embedded JavaScript for redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://catamma.ru/uplcv?utm_term=shortly+meaning+in+bengali PDF link annotation
    • https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/318bdb7e8910fd2c267ecfd2b0751f3c/77369574749.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c5cb1c65a4c---3315377379.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/61c733d00af4b0f0fea42115959505a6/jepos.pdfIn PDF document text
    • http://fkhd.cz/data/img/93791609626.pdfIn PDF document text
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/16074758ac358a---80745005835.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/93c768dd927eee8fe71bf8ad061b226c/ninatoli.pdfIn PDF document text
    • http://shriadinathbank.com/uploads/gifiwimigin.pdfIn PDF document text
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/3aa5bcbd3c3426899d997628a52705f3/gotutekexike.pdfIn PDF document text
    • https://triptoboloyfoundation.org/editorsfiles/files/2288013924.pdfIn PDF document text
    • https://chiataiec.com/userfiles/Proj_Name/files/68924859432.pdfIn PDF document text
    • http://elektro-galerie-hamburg.de/userfiles/file/benokixuzijimilerurek.pdfIn PDF document text
    • http://saringkarnwood.com/UserFiles/file/13406270225.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16093ad3e26c66---vusujitasozubi.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d361d92bad---wodesaxep.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160c2247a72893---61526107006.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1609febcb73d5e---11883488207.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/322474bf0054558792530c323aad2cb5/77320006588.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/0d7a38d7b1e15ea112bc89d8663b37ff/20434124061.pdfIn PDF document text
    • https://wavemed.it/wp-content/plugins/super-forms/uploads/php/files/59c3ced9181d8c79341bc2ca532b1f1a/13196097642.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/2a7fdd1b8081037ef3ba1a4bd6318412/ledox.pdfIn PDF document text
    • http://peaceinsrilanka.lk/ckfinder/userfiles/files/15318956108.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079a5d66d718---29192432348.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_off0000c472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC472 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dc89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC89 10716 bytes
SHA-256: 93e214a3bb53c12aeee30b39173f013dd6be1c76c3d6c3697caba1bc469a34be
font_02_sfnt_off0000f4fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FE 20884 bytes
SHA-256: 4aafaf21fb1a21033e826811fb3f9c95d14310fe1eed62a2ea9fca1b1758c4e7

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