Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec689c2901b1fa0…

MALICIOUS

PDF

82.1 KB Created: 2021-09-07 10:50:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 3712d9c629a5dacbc442a0ad5b553243 SHA-1: 62ea39b589037d18ed8a36e1d09eea2dece331a0 SHA-256: 7ec689c2901b1fa0e7c8e39ea2cdd1dc623012b8e4b05896c3f8de248b44fcdf
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The presence of a 'password-protected archive lure' heuristic suggests the document is designed to trick users into downloading an encrypted file, likely to evade initial security scans. The numerous links to disposable hosting and compromised CMS uploads further support a malicious intent to distribute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://bptramptour.pl/files/file/fadifajogadoriruwujuwik.pdf In PDF document text
    • https://bodegoncriollo.com/userfiles/file/nujegiteniwunef.pdfIn PDF document text
    • https://espiber.cl/images/uploadedimages/file/gagev.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a764e0d9043---potodekusefubam.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160798058ecc54---wulorisigumazolenuga.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/e701ba2d92b809952ec7902df0d9e639/27112928529.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/ba387e4338277b1b77baa7d39a3b146e/76282090770.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160898b90f3f6b---96483281161.pdfIn PDF document text
    • https://soechi.com/userfiles/file/sugixevedawawikamosusokez.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e01b936cd3d---88806726910.pdfIn PDF document text
    • http://zdrowejaja.com/Upload/file/bogigenevadabirodox.pdfIn PDF document text
    • https://hardlineconstruct.ro/app/webroot/files/userfiles/files/jisejawujisexawokopuseku.pdfIn PDF document text
    • https://evrenmentese.com/upload/ckfinder/files/73603656566.pdfIn PDF document text
    • http://gps-ambroisie.com/ressource/site-image/files/lebiporenakatogagukezuni.pdfIn PDF document text
    • https://icon-studios.com/userfiles/file/54712903832.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c47f688a98---29462088162.pdfIn PDF document text
    • http://strandedtattoo.net/file/nopurefamo.pdfIn PDF document text
    • http://fanti-fitness.pl/uploads/assets/file/62726745143.pdfIn PDF document text
    • http://buyyoutubelikes.com/ci/userfiles/files/tazesajepemenovelurupuz.pdfIn PDF document text
    • http://archifolder.com/userfiles/files/94371894500.pdfIn PDF document text
    • https://tvsporedi.si/vsebina/15446935631.pdfIn PDF document text
    • https://vokalensemble-vocembalo.ch/userfiles/file/54463827036.pdfIn PDF document text
    • http://short-story.ru/upload/file/74341591427.pdfIn PDF document text
    • http://domgr11.ru/uploads/files/zepuroxezimoveruvu.pdfIn PDF document text
    • http://a-swiss.com/upload/userfiles/file/27770805771.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=como+convertir+de+pdf+a+imagen+jpg+onlinePDF 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_off0000d800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD800 11020 bytes
SHA-256: c335b84f19d8f1c3f0f4e229a661b8414ab11d929d59d5540ba898f87e61f4d9
font_01_sfnt_off0000f161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF161 19400 bytes
SHA-256: b2bb467b424a66a58e43ccb1da593c23a2f99fec7a92f91336d3116e5ab62369
font_02_sfnt_off000122da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122DA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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