Malicious PDF — malware analysis report

Static analysis result for SHA-256 201e05b2958745de…

MALICIOUS

PDF

92.4 KB Created: 2021-09-02 14:58:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e171228016263870169ca538335d3ffe SHA-1: 3a7a9b09e631676d5dc66360e3e5fd97095ed284 SHA-256: 201e05b2958745de1fe9b1c58778abf6e11d922f7f08805b7ebcba421f58ab2d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external URIs, many pointing to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document's structure suggests it functions as a link farm to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://irlanc.ru/uplcv?utm_term=le+petit+chaperon+rouge+histoire+courte+pdf PDF link annotation
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161004cd905a32---libabesufafipodo.pdfIn PDF document text
    • http://maychamsocda.vn/images/userfiles/file/9681071596.pdfIn PDF document text
    • http://jhsclassof63.com/clients/c/c8/c8cc7cee7579ddcd469b669c0eb172d8/File/2520316609.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/cfac36150df9bb722970030ce972802b/wudoguzixamalaj.pdfIn PDF document text
    • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/151fd6b808e1e7c1bdd0b2fe9ac6d2a8/pubizovukezuvomamik.pdfIn PDF document text
    • https://ringid.vn/ckfinder/userfiles/files/37507543227.pdfIn PDF document text
    • http://lblussana.it/images/file/63672035516.pdfIn PDF document text
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/160857032cb853---74906448344.pdfIn PDF document text
    • https://laflammerouge.ch/userfiles/files/76576989452.pdfIn PDF document text
    • https://www.ndgai.com/wp-content/plugins/super-forms/uploads/php/files/h210rr9pa83mk1l9ol13v7rge5/93866888464.pdfIn PDF document text
    • http://dom-2000.ru/ckfinder/userfiles/files/16692187150.pdfIn PDF document text
    • https://smilaxlabs.com/userfiles/files/wekodul.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6b86b041566a6067f2cfa8357cc101ff/59746544502.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///72051221708.pdfIn PDF document text
    • https://reitinguok.lt/userfiles/file/14710794378.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/f9255558224c4a99e6690af26cad816b/rofenisoreseniwuz.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609eca1f1659c---jefaja.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/r7g41n4vuievnqrt32gb2lpddm/68286361078.pdfIn PDF document text
    • https://essuances.com/ckfinder/userfiles/files/vozejalasenonox.pdfIn PDF document text
    • http://haenuri.net/ckupload/files/17886327364.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f232877b4e8---japapopu.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b987a20fb8---mabakifore.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_off0000f50a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50A 10912 bytes
SHA-256: 3432ade53dbdc19e73454a09c40c098128c199f79f597d9796758851fc7961e0
font_01_sfnt_off00010e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001261e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1261E 24212 bytes
SHA-256: 0316551d6d3b4ef60ccfe583076d3fdfb8a2e4f662a73d354a9bb3221dde45dd

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