Malicious PDF — malware analysis report

Static analysis result for SHA-256 002a4c7aed4bb89e…

MALICIOUS

PDF

94.1 KB Created: 2021-08-19 04:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b868b7b7f53216af0158173f7a53a017 SHA-1: 242ba2c6e03120eb383d2906b249048cfbc73bbd SHA-256: 002a4c7aed4bb89e328bc9b0b08ce7ee1cdfe991c79add50c601f5fb7905cc5c
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. It also features a link farm pointing to multiple domains, including compromised WordPress sites, suggesting an attempt to obscure the final destination and evade detection. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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
  • 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.
  • 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 https://advantagelic.com/singhania/downloads/file/nepupetal.pdf
    • http://alexanderkanevskyartgallery.com/clientMedia/file/mapijudamek.pdf
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608118a22bdd5---xesenovuxadotelekalisixun.pdf
    • http://brandiassociati.it/userfiles/file/29687771090.pdf
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16091de139b849---78510737661.pdf
    • http://eschool365.in/js/admin/uploadfiles/file/vosisotixexo.pdf
    • https://marathonroller.com/userfiles/files/47272999439.pdf
    • http://diversecityuk.com/userfiles/file/56135202550.pdf
    • http://schodylux.pl/userfiles/file/nukusilemimarawisop.pdf
    • https://fsbulletsandbrass.com/userfiles/files/bemuvizizibekefewipax.pdf
    • http://museodegliarazzimarsala.com/userfiles/files/21886658988.pdf
    • http://interiorconsignments.com/media/file/xakaju.pdf
    • https://www.pactforfamilies.org/ckfinder/userfiles/files/72707844500.pdf
    • http://interfacetravels.com/app/webroot/js/ckfinder/userfiles/files/tegurawon.pdf
    • http://guojingmall.com/userfiles/file///12818498674.pdf
    • https://simplehome.ro/ckfinder/userfiles/files/nidajupubo.pdf
    • http://wangyiphk.com/userfiles/tovuruxiwopisirog.pdf
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1608353ccc9e7a---66045389156.pdf
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/jrq4ur363qrqspeepkmr2hviv6/58625904751.pdf
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608646e6c0edc---30415251344.pdf
    • https://press-centr.com/images/file/fabameranebu.pdf
    • http://shuswapladystriders.ca/userfiles/file/vasoxomikasabarelabujavi.pdf
    • https://muachungbaohiem.com/uploads/userfiles/file/65921382158.pdf
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609e5059cb57f---27660201777.pdf
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/60f23900ea878d7dd03ed8ca981d1365/54890220662.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=spacex+launch+boca+chica+today
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c9e.bin
14c8436784bfc87b94306496712c3d795c1e6cf61229309e86531448d1adc79c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C9E 16964 bytes
font_01_sfnt_off0001390c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1390C 16792 bytes
font_02_sfnt_off00015123.bin
816282454cf946584beec81a6762cbca0c0a5ab618cde002ab7c90a0e0ef17a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x15123 10876 bytes