Malicious PDF — malware analysis report

Static analysis result for SHA-256 092e8eaf5417c9f4…

MALICIOUS

PDF

81.6 KB Created: 2021-09-17 11:09:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 56b0a75dec507dc5db2ab6694a0af373 SHA-1: a99051fd31c12abfd06c0b40100558a7defd6add SHA-256: 092e8eaf5417c9f46eb8a58c38543348114bfab6ba2d8e84b73eb049ca505bc9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs that form a link farm, directing users to potentially compromised websites. The presence of urgency language further supports a phishing or scam-related attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://nomylo.ru/uplcv?utm_term=all+tools+apk PDF link annotation
    • https://rajaketiga.com/contents/files/40194258245.pdfIn PDF document text
    • http://drairtools.com/ckfinder/userfiles/files/38673191225.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/58d92haqtsbo9b4eln8i9favq2/37452030380.pdfIn PDF document text
    • http://studiomanzetti.it/userfiles/files/85491059601.pdfIn PDF document text
    • http://lepetitjaunais.com/userfiles/file/basobomewakux.pdfIn PDF document text
    • https://yukkumpulgroup2.com/contents/files/68239112920.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16139f9913e08b---lamadixejafovopitasikeze.pdfIn PDF document text
    • http://gs-metals.com/filespath/files/20210914170728.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/vs4ev9f11jd2cldl0ksjp8t1g2/55463732306.pdfIn PDF document text
    • http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/72841051822.pdfIn PDF document text
    • https://afra24.com/basefile/afra24/files/33374518372.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1613fac107c9fb---jisabikalu.pdfIn PDF document text
    • http://abbeytraining.net/userfiles/file/melepiji.pdfIn PDF document text
    • http://annassteen.com/ckfinder/userfiles/files/87540991521.pdfIn PDF document text
    • https://artesapanaderia.xyz/aym_image/files/zerumukawa.pdfIn PDF document text
    • http://pokemom2.com/uploads/files/tavejubifuzuf.pdfIn PDF document text
    • http://smwiarus.pl/ckfinder/userfiles/files/75965242507.pdfIn PDF document text
    • http://infinity-pro.ru/userfiles/file/pakelegadagato.pdfIn PDF document text
    • https://estduquebec.com/scripts/php/xenocode/lib/ckfinder/userfiles/files/zatutaxibuka.pdfIn PDF document text
    • http://acelybio.com/upload/files/viduborafojedogiwazafab.pdfIn PDF document text
    • http://savvyais.com/userfiles/file/35334954031.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136a1f62084f---fanomovimumevuliwulafodu.pdfIn PDF document text
    • http://happyorderfood.com/uploads/files/49714568504.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/dc89ed1dd12221da4bb943de7dbe6ea4/jigitugaruzilibikarowi.pdfIn PDF document text
    • http://another-partner.morefriendship.com/upload/files/worikamasape.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_off0000dc7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7A 17788 bytes
SHA-256: 3b9d8b25bd180f981ea3192d186d6884929b6196e19910e1de4429fce08d4224
font_01_sfnt_off00010a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A9F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000122b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122B5 9892 bytes
SHA-256: 81951d85093b5e1490b1d820ac127ddb590b2133d849833125cb7791d5278d3b