Malicious PDF — malware analysis report

Static analysis result for SHA-256 32f0e7aeaefba139…

MALICIOUS

PDF

83.6 KB Created: 2021-07-17 11:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 811edf6c41faff1e851e5f42e32d1148 SHA-1: 15dcf4cf46a3bede714de00fb9c4141711bade8b SHA-256: 32f0e7aeaefba1397eebae0a5ce7f73f37585866de7c03443a52f7601dc7caae
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with numerous URLs pointing to compromised CMS upload directories and disposable hosting. While no scripts were extracted, the structure and URL patterns suggest an intent to lure users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://414movement.com/wp-content/plugins/super-forms/uploads/php/files/83b77474f08eb06a54cfea5d44350a19/xupelakiluri.pdf
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/ggqr4ksmkboc9lnbbc3ldqi8q5/nategepefuja.pdf
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9834b391cc---bazolo.pdf
    • https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/da0c745d2d342e97ac68f0f7f593fa06/45236763949.pdf
    • https://laetitiabernard.fr/images/file/xadagamuwako.pdf
    • http://janandpoos.com/clients/872640/File/27056986084.pdf
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/d954argmom6jmsb427q1h0lpe1/rekukobosaxaro.pdf
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/f2r0h8s8688j044307afccppr3/tupaxaxitojirelali.pdf
    • https://samyenngochoang.com/wp-content/plugins/super-forms/uploads/php/files/ubomtj19uo2sj4sqsiu47426af/nibasabimawarutijez.pdf
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/vsdpi7p7ure5nmruduhvlio21k/dinemiduj.pdf
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6606cde047---nulaxexadebiba.pdf
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076f97fefb71---36268422990.pdf
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/iefts8s163t3bgu95fj9ui0737/variwepusigatob.pdf
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/v8rhlhegi6i6k7tdr8qm279pjp/zopumuwadopip.pdf
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a5cd84209fa---ladafemafilosirinowasaw.pdf
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/8e5bf0a16c1135fd51c973a73512c99f/84124820700.pdf
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5b2a1da87---5122778576.pdf
    • http://xn--49s538bo8ux8c.net/userfiles/file/pepufiw.pdf
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/b5abdc87343cbf28deda173ef5e66573/24254076588.pdf
    • http://futurepoolandspa.com/ckfinder/userfiles/files/fuveziwofaxe.pdf
    • https://cairparavel.ro/app/webroot/files/userfiles/files/xosutomewugaxibigogubu.pdf
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/dhmb5sbktciqlph0s999ombhh7/xabijumakadesizozatawom.pdf
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/160826dc25c02d---lofor.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=which+type+of+art
    • 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_off0000e3ca.bin
3616ec1943d4df249602cd758c14c85e726f7add968801a23533bebf976be428
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CA 17024 bytes
font_01_sfnt_off00011022.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11022 16792 bytes
font_02_sfnt_off00012839.bin
0ba8f846c8fc510853a7b3b6ead8c355b56487429e724717e4b237db6cbcd8a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x12839 10368 bytes