Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fff07257fd7afab…

MALICIOUS

PDF

80.9 KB Created: 2021-09-18 03:02:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d360191373b077ca92047695bb35070f SHA-1: 9336b13a72e8fc17542da6511afd8b6d52f5ca47 SHA-256: 6fff07257fd7afab89be52bf1891e52c0a3c5e48e1837014141075335fd019a9
236 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1555 Credentials from Password Stores

This PDF document was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing lure. It contains numerous links to external sites, many of which are hosted on compromised or disposable domains, suggesting an attempt to distribute malicious content or harvest credentials. The heuristic 'SE_MFA_LURE' indicates the document likely prompts the user for MFA confirmation or a one-time code, a common tactic in credential phishing. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests it may also instruct the user to open a password-protected archive, potentially to bypass gateway security.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 8

  • 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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://psychologkmalinowska.pl/ckfinder/userfiles/files/67120719726.pdf In PDF document text
    • http://koyomisushi.com/uploads/files/feminoguditakot.pdfIn PDF document text
    • https://digireg.lu/upload/97129236173.pdfIn PDF document text
    • http://lindseyderence.com/userfiles/files/bamoxenekoz.pdfIn PDF document text
    • https://regionalhealthprogramsww.com/images/file/zonilosorapebolom.pdfIn PDF document text
    • http://perfekt-dom.pl/designhome/admin/userfiles/file/33805959129.pdfIn PDF document text
    • https://webaprint.be/img/file/ruvite.pdfIn PDF document text
    • http://fthyhs.com/resource/docContentImg/file/2021-09-10/884c770c8efc43ca46835b0027e4b502.pdfIn PDF document text
    • http://df-2.de/images/daten/file/dexijafadepotuna.pdfIn PDF document text
    • http://wajl.net/img/file/2021910195147.pdfIn PDF document text
    • http://koreadramatour.com/FileData/ckfinder/files/20210907_40DAF98EAA2A0C68.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e95948e43f---87427494597.pdfIn PDF document text
    • https://hoatuoi360.vn/uploads/files/taturar.pdfIn PDF document text
    • http://liderzy.natura2000.pl/imgturysta/files/61209791575.pdfIn PDF document text
    • http://naasschoolofmotoring.ie/fckeditor/userfiles/file/1092083101.pdfIn PDF document text
    • http://beloezoloto.ru/userfiles/file/15229555458.pdfIn PDF document text
    • https://bipalisdemo.dashindonesia.com/userfiles/files/61081616933.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143e8ff18be0---80915773109.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/161343bae17bdc---perorawalapegamazelujut.pdfIn PDF document text
    • http://riccaassociati.eu/userfiles/files/xonedamafonax.pdfIn PDF document text
    • http://scro.ru/pic/file/68416051149.pdfIn PDF document text
    • http://reklama-v-sochi.com/ckfinder/userfiles/files/91815816834.pdfIn PDF document text
    • http://svx.su/ffile/file/fuzukokigunokenaf.pdfIn PDF document text
    • https://motodubai.com/uploaded_images/files/39625045669.pdfIn PDF document text
    • https://montpellier-business-plan.com/mbp/upload/images/images/upload/ckfinder/6958567246.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=forgot+pin+how+to+unlock+phonePDF 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_off0000d7c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000efd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD2 17872 bytes
SHA-256: a9d6e7256ffc46568336197133303d9d1ff9570f34948a188a4a1ff9862f586c
font_02_sfnt_off00011d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D7E 10576 bytes
SHA-256: aa56aa5b7d7ce0c339c86d1e98e3eb6e630dcbedf658b97d8c1abc593d286a15

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