Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0bba497b0dc3692…

MALICIOUS

PDF

78.1 KB Created: 2021-09-01 04:44:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 217aa1ef7b8143bb2cf2c03a63c22248 SHA-1: a3af98676798b01a9c78e7c029c4b4a5b687a8f3 SHA-256: b0bba497b0dc3692bf6de201d6e2fa3dd96d5efba526eab804966bb0c8806bfa
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a link farm pointing to multiple compromised websites, likely intended to lure users into clicking through to a malicious destination. The presence of numerous links on disposable hosting and compromised CMS upload directories suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 6

  • 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.
  • 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.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f0d5de4e68---rinonivixudu.pdf In PDF document text
    • http://www.evisiontiendaonline.com/ckfinder/userfiles/files/88523354865.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/7116cc9228f3709848d8f7d4e99edbc2/36978767391.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a34870a9475---fizupodagujibevobudadivuw.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/6e806a40745b0b035d047d991a45de79/zewugawerafuwiko.pdfIn PDF document text
    • http://tourister.kr/userfiles/file/91951673060.pdfIn PDF document text
    • http://nensi.si/upload/file/25351941490.pdfIn PDF document text
    • https://rybczewice.pl/userfiles/file/11535098761.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/89004ecb970af355455dbe6508719d8e/49563597671.pdfIn PDF document text
    • http://primaneighbors.com/userimages/jezopabax.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/2f026afb986d33b7688d39d90bae1dd5/93234242256.pdfIn PDF document text
    • https://villanakarin.com/userfiles/files/36898525897.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160977f367cb21---18895647220.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607788c284071---buvotibalosego.pdfIn PDF document text
    • https://bushregenerators.net/userfiles/files/62236896533.pdfIn PDF document text
    • http://studiostocchi.eu/userfiles/files/kudofosakalepatoxegagafe.pdfIn PDF document text
    • https://gifarlcm.com/upfiles/editor/files/60853320678.pdfIn PDF document text
    • http://agapetown.net/ckfinder/userfiles/files/tujevotupogoworivajo.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/f79d0ae9064e1ae53f2e0debd9373f26/85175039304.pdfIn PDF document text
    • https://mvmdigital.gr/files/files/notafutuker.pdfIn PDF document text
    • https://firmabudowlanawalczak.pl/web/uploads/files/58490400088.pdfIn PDF document text
    • http://mexxeopaint.com/upload/files/jexubipukakikotapetosow.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/18965d2ad59cf6373be91a9715f63627/73267379020.pdfIn PDF document text
    • http://secureyun.cn/uploadfile/file///2021073008121214.pdfIn PDF document text
    • https://inverpalmas.com/aym_image/files/goloxadewuzasitanum.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=35+1+human+body+systems+answersPDF 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_off0000ce0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE0F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE621 16152 bytes
SHA-256: f687594d6614a2e85662de1840028f120eb433cb41c15f6f2244681c004182f5
font_02_sfnt_off00010f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7B 11076 bytes
SHA-256: 8f4060e14690873fb6f9fdf9d8c2c180d674ada793841cb42d12786718f3ff7f

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