Malicious PDF — malware analysis report

Static analysis result for SHA-256 56d2b27666f6bd02…

MALICIOUS

PDF

93.6 KB Created: 2021-06-25 17:30:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eeb568a952a735c407bc114ec0ee9acf SHA-1: 3ce6c2bd1672edb4f0244fb01ad8214794db6419 SHA-256: 56d2b27666f6bd0289cac0bdd6bda2503b03fca497a7fb3e1dbe339c57a70bf7
156 Risk Score

Malware Insights

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

The PDF contains a link farm, directing users to multiple external URLs, some of which are hosted on compromised CMS upload directories. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, so the primary attack vector appears to be the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/dbabf6f13b431993dee916996dc03ba7/zodemolamofesikimotama.pdf
    • https://aquafilling.com/userfiles/file/75359450805.pdf
    • http://china-hold.com/UploadFile/file/20210617180157698.pdf
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/e56dcb8a68fbcde08723f261cdbc2910/59538675470.pdf
    • http://sistarelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lulovizoduguge.pdf
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/0cqk0unk56ujtchjjfn4m6qgo2/namixiwamekegopobesesu.pdf
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/b102d3b58e3bc019de28fe99b27da0a2/27170097352.pdf
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/b4478ca08de80ff0277ba3823275c56c/giwerejejewe.pdf
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ff4c2b19f---98066146354.pdf
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609389fff0118---27230409552.pdf
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/406fd3abc74c15df94d148e21ab9900f/bodemedu.pdf
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b474cb73346---24455297487.pdf
    • http://parkwaywest1974.com/clients/861606/File/26556365488.pdf
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609508b83a001---88582745970.pdf
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/e65dc3f83a9e4a3707a693790485ecfc/joworuwatarawawenowap.pdf
    • https://stillwaiting.org/userfiles/file/safefimegirowexej.pdf
    • https://uleiuri.ro/userfiles/file/bozudizulajizibajagedube.pdf
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/grph5m995h34spn424qtac0rn0/gegivas.pdf
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/790a110961a7f407e64b28cc4c90156c/34672992547.pdf
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/3591675c73b127ea2cdbf5463cca7ce2/makobisofabiwi.pdf
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607cae8c390f1---vobesalibubagibag.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=advantages+of+sustainable+agriculture+pdf
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000ed8f.bin
e8bd5ae8dfa42d5d2b576e91fc6311e2c3edfa7a2da57c0aa477e8cc9db8ff00		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xED8F 18504 bytes
font_01_sfnt_off00010b39.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B39 16792 bytes
font_02_sfnt_off0001234b.bin
8d55eb25d7b44377f10620142550f164b901d25064a942b56f868341ea5e059b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1234B 16708 bytes
font_03_sfnt_off00014eda.bin
bf4e4a20a5261582d28a809af40af1b16be77bffacd6e0cb95bf41a76e3858ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14EDA 11084 bytes

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