Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e900780d9f2d9e3…

MALICIOUS

PDF

158.5 KB Created: 2021-08-06 05:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 56a2bd30959730bb617096d5a76460d1 SHA-1: cbd2cf6e1fa85c324447989345f9042297aef34a SHA-256: 8e900780d9f2d9e3a0a3436ec70d14ba32b3015e27fe2878f4f38b400c1a9899
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that exhibits characteristics of a callback phishing or tech-support scam. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting an attempt to obscure the true destination or host malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9888

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/ak0a9osgsdtt4bt77413h87ndc/xidozapisuxijomokejapo.pdf In PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/eir0sd35p2845699909bej1dkg/74591202877.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/87108794563.pdfIn PDF document text
    • https://hostingalani.com/calisma2/files/uploads/82596974558.pdfIn PDF document text
    • http://rencontres-icare.org/userfiles/file/16370812968.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2c580ace25---24514375471.pdfIn PDF document text
    • http://eakqshop.com/ckfinder/images_store/files/xokifupofi.pdfIn PDF document text
    • http://apexnepaltravel.com/userfiles/file/1772288939.pdfIn PDF document text
    • http://capitaloffice.pl/fotki/file/70005729357.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/149002316f4e8d8ca42b4de774e33a4d/gadavijapa.pdfIn PDF document text
    • http://systemsbiology.at/uploads/assets/file/labepopojebew.pdfIn PDF document text
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160892c5c062ae---36369571852.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5743170a96---57200665222.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/575bb693ac8c3044e97a62d210ce2ca7/81261519228.pdfIn PDF document text
    • http://ddaengshop.com/ckupload/files/zelimezud.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160701bb0cdfa4---lizosexuremu.pdfIn PDF document text
    • https://arhometutor.com/userfiles/file/mijuropowizuvego.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/49466350203.pdfIn PDF document text
    • http://residenceraffaellotorino.com/userfiles/files/48606222662.pdfIn PDF document text
    • http://carsongrad75.com/clients/3/35/35717660c32d3dd9b0ffde8f33a19d23/File/lokopofasikajanotidip.pdfIn PDF document text
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/3fa40a28747ecbd6b54313207f0d5243/zatojew.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/urs8ue0shna0ah6tkgv0gj91f7/bukofosawonusodi.pdfIn PDF document text
    • https://cabsfromheathrow.com/userfiles/file/23501700924.pdfIn PDF document text
    • https://cicadit.ro/UserFiles/file/vozitofibisuborunixik.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/f46dc1436bac4fefd4091a5467999315/poxisebomufofaber.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=abu+garcia+6500+replacement+partsPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001fd70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FD70 19100 bytes
SHA-256: 052514ca441dcb6d50c948f1c2d298c80090830b84b7a36afd6b184adef84ec1
font_01_sfnt_off00022f1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22F1E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00024735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24735 11244 bytes
SHA-256: dfc1ca09d527773b118c7bd59aa64bae9caee363fdf77ca6c48728efa36ae6cf
font_03_sfnt_off0002616b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2616B 2024 bytes
SHA-256: e81e33f2e011f2e68f1dba629ba2b3d45a088321108c110f3927f0c01f2c13c7

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