Malicious PDF — malware analysis report

Static analysis result for SHA-256 1045eac9f7b37c81…

MALICIOUS

PDF

86.4 KB Created: 2021-07-31 13:41:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: ee89f2f251556d690f6012fb9a1682a2 SHA-1: 631f505268db9401532de12fe7147b160202e65e SHA-256: 1045eac9f7b37c81e0f97c33de77b6f7e5f722ec5bff8abe924dc1a7d7717d8e
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The numerous embedded URLs, many pointing to compromised WordPress sites and disposable hosting, suggest a phishing or malware distribution campaign. The PDF structure itself appears to be a link farm designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://crewmak.ru/uplcv?utm_term=what+are+the+leadership+styles+pdf PDF link annotation
    • https://echipamente-scule.ro/userfiles/file/42620068886.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7e0f872628---zifesu.pdfPDF link annotation
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/e01a1d158f86bc369300fd02bdc73dc9/93587424400.pdfIn PDF document text
    • http://toanlinh.vn/upload/files/20783035163.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c187647f1ec---10988068310.pdfIn PDF document text
    • https://gsm.company/ckfinder/userfiles/files/xiduribafimoti.pdfIn PDF document text
    • https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160f43984a144a---pizoxapemabopola.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079c97c8520e---18161820480.pdfIn PDF document text
    • https://ecoretras.com/file/tefipob.pdfIn PDF document text
    • http://appartenvue.net/appart/upload/images/81800805194.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/41234391360.pdfIn PDF document text
    • http://cattaneoarchitetti.it/userfiles/files/jesodugopurolasivigodo.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160dbc046990a3---16820811663.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/falkduol6k64supndnna8ne5p5/72785923436.pdfIn PDF document text
    • http://onlineexpert.in/userfiles/file/16566453999.pdfIn PDF document text
    • https://tecnicadovolante.com/images/file/77114141439.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/6a6d15add2f7cc84cb8f7d9ffb94fc7e/35641099843.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/628809222e661138fb39e6f7cc184ede/mokeliboxelemafap.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9a3b65a05---88917059635.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/2c0594339f3aaacae72076583d242098/lemikurugulaxejevi.pdfIn PDF document text
    • http://prinsart.ro/uploads/files/dawuzef.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/kg2nunu0l883efpd8m0pssahp7/51316434099.pdfIn PDF document text
    • https://pensiuneavalentina.ro/app/webroot/file/gazuju.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/5919a7d07a5fe7c8ea00e91394da618d/43294095491.pdfIn PDF document text
    • 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_off0000f04a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001085c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085C 16856 bytes
SHA-256: c5bf7734b20e2987a22be2f4b133195cad025f54fd4c60373d1b941864d693fe
font_02_sfnt_off0001344f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1344F 10476 bytes
SHA-256: 2661135e31f30da8077702f091264aeb2d516315c5982feae85321d2c40e6586

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