Malicious PDF — malware analysis report

Static analysis result for SHA-256 70176c02a8af58df…

MALICIOUS

PDF

87.1 KB Created: 2021-07-01 19:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 081f222d726948116f371bf9f925618b SHA-1: 8bdf6c08c585d9704bf96f7563273cf50c65f1e2 SHA-256: 70176c02a8af58df46356a1277b1bad94bbf2e1022d293178409cd4779532560
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised websites, suggesting an attempt to redirect users to malicious or phishing content. The heuristic 'SE_URGENCY_LURE' indicates the document may contain urgent language, further supporting a phishing or scamming intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/752bbc7a59e86f27f5675ad5eccf2753/33323985900.pdf In PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/ul366vt6mvfovjsfgm71mulpud/61529353739.pdfIn PDF document text
    • https://moto-trend.cz/public/files/fck/file/doledufupefalape.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c9bbbcca0---kubibipilonememara.pdfIn PDF document text
    • http://springbook.no/files/59463509658.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/b3ad077851d72b5862cc7444f2016f63/rugigujuvuz.pdfIn PDF document text
    • http://bagliodeimille.it/userfiles/files/nimujipotekexizaxim.pdfIn PDF document text
    • http://atek-ent.com/upload/file/dogesijituwuvataruzog.pdfIn PDF document text
    • https://dienlanhhonganh.com/images/pic/file/pabojivekibarise.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/1d133a36b1fba1b8acac0d11e4619857/19115018191.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c62a6d790af---71654437099.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1609d35296e475---77886289258.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/4205ee70fc8bdb7f486499e6fd2521d6/rixuwexibedotuxuneg.pdfIn PDF document text
    • http://perfekttorun.pl/pliki/68983209270.pdfIn PDF document text
    • http://gemculture.com/userfiles/file/23475519440.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/582d6296abdd06955501df631197f484/gijot.pdfIn PDF document text
    • https://syteq-pro.com/userfiles/file/63149186415.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/e332640e43702ee446bdd7cd5f38da39/nobufutinumipokizemana.pdfIn PDF document text
    • https://area34.info/wp-content/plugins/super-forms/uploads/php/files/v2linod71r69tkstbcro9eii62/39072872585.pdfIn PDF document text
    • http://baugeraeteverleih.de/benutzerdateien/kebisibomukogobudeni.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd86ea524d---74506242806.pdfIn PDF document text
    • http://cuacuontoanthang.com/media/file/netopi.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/df47637670e67cabd29bc537ff63d9f3/77242398470.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=dog+tired+groomingPDF 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_off0000f80a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11021 10216 bytes
SHA-256: 9011788a90de231f482d72b3abe384338881628fb4d54ff8817fb2a7fa5399d9
font_02_sfnt_off000126c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126C0 16112 bytes
SHA-256: 2cc24023b5f21aee266f37cc677e8e065076d28652bc614fbbc963254b30a129