Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e9d7f7345a75a2a…

MALICIOUS

PDF

353.5 KB Created: 2021-06-28 21:25:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 15de214a32add66367dd1ab8c0414aaa SHA-1: 31dd358441176c740c375fc80a05f26ecee88fd9 SHA-256: 3e9d7f7345a75a2a91d6e902355c7cb0a9edf6a1027d30cb6434f63d8fe705d8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains numerous URLs pointing to compromised WordPress sites, indicating a phishing or malware distribution attempt. The PDF structure and embedded links suggest it's designed to redirect users to malicious content hosted on these compromised domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9784

Heuristics 5

  • 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.
  • 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 http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b75ddb1d5ec---ladapidibinotodusizat.pdf In PDF document text
    • http://saovietgroup.com/upload/FCK/file/2224460132.pdfIn PDF document text
    • https://allcreaturesinc.com/files/files/xudukigexego.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160877f3911eee---muvulapidamapedujoposebok.pdfIn PDF document text
    • http://ecbpolska.pl/wp-content/plugins/super-forms/uploads/php/files/c022ac61338e3d5d282117705f1a9510/bizixokowixazit.pdfIn PDF document text
    • https://muratay.nl/userfiles/file/jupitejezix.pdfIn PDF document text
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/kvjvotjp3jbe9ou1di6s0b52t8/62745812184.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160c88424ce072---goragosepijewipunukudufi.pdfIn PDF document text
    • http://ourhkg.com/UPFILE/userfiles/files/9967028625.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607d300af0529---nanekolovedegekokon.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609188472a851---24527479156.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cd797db81---89713134593.pdfIn PDF document text
    • http://nwatchonline.net/userfiles/file/39083376614.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085e8a9de330---36336657269.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16086c6c34bddf---girexutizegugisofedalipi.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/227c736225e75bb83560dbc8a8bd4589/71160188604.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608805c5e312b---fetagoketonapabafeziti.pdfIn PDF document text
    • http://smn68.com/clients/75339/File/76779070775.pdfIn PDF document text
    • http://aldara-latinoamerica.com/userfiles/file/34655567349.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/81092671208.pdfIn PDF document text
    • http://nacyc.jp/Upload/file/54375616436.pdfIn PDF document text
    • https://coimbatorepressclub.com/FCKeditor/userfiles/file/15500234603.pdfIn PDF document text
    • https://eqonetech.com/upload/userfiles/files/voxosova.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/muukif5eck20582bocg0cudru1/kalodujakob.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=psalm+139+new+american+biblePDF link annotation
    • 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_off0005192e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5192E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00053145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53145 10792 bytes
SHA-256: bbbf904ed531bffe493e19b75fc2637cf6b4176c50f0f1c1e9e17551c41dec88
font_02_sfnt_off00054a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54A35 17264 bytes
SHA-256: 63fdbd58da20bd1d3d9fe46f5cba1c8f82fb00a3bf910b525c0857992ce49799