Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c38a52d02e3c34e…

MALICIOUS

PDF

84.4 KB Created: 2021-06-26 13:55:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: e61555aba404a11fd56d471a09a921b6 SHA-1: 7007ba246739894960d76985c6c9154af20f6831 SHA-256: 0c38a52d02e3c34e0fdf167d8a9695c30c9a9dffdbd654977e71df87a715f782
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The 'SE_CALLBACK_LURE' heuristic suggests the document is designed to trick the user into calling a phone number, likely for a scam. While no scripts were explicitly extracted, the presence of numerous embedded URLs pointing to compromised CMS uploads and disposable hosting suggests a phishing or credential harvesting attempt, potentially leveraging a PDF exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://gencshoworganizasyon.com/upload/ckfinder/files/nepugowipamovipojilebuw.pdf In PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/ag8f5b9c1pvtah5am436ot3296/zisagudejulenux.pdfIn PDF document text
    • http://yuanjen.com/ckfinder/userfiles/files/samotiguzaxalidilutifanej.pdfIn PDF document text
    • http://grimastone.ru/files/minivaka.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/aecbbc32bc814f521d7f839818887ef3/81057592451.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/iu726jsdtvp7lcgsvn834jjltk/54450852744.pdfIn PDF document text
    • http://rcp-ranstadt.us/files/17197671335.pdfIn PDF document text
    • https://biomedchita.ru/imeg_master/file/vijobi.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/98d628c91a034b82b41433504d6803da/firuzirovunubozikafovose.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6d055a274---49100912652.pdfIn PDF document text
    • http://getampedmag.com/ckfinder/userfiles/files/21151112868.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160832b4e1be68---77701507623.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d0b20d00228---49914367002.pdfIn PDF document text
    • https://gamedunyasi.com/calisma2/files/uploads/54547899778.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c690dc97e7f---pamezevonidovegeniperoku.pdfIn PDF document text
    • https://avistravel.ro/userfiles/file/kuragufawubutepoxo.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/ecdd0e0c78149624b52675155db27dc9/kebub.pdfIn PDF document text
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/068f0c49c357aa1493a832cbb63b345a/tapugo.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/34739126ef2d5bd5ab372d67305e8a06/zotupuderizitivor.pdfIn PDF document text
    • http://alexanderjamesbackcatalogue.com/userfiles/file/tivip.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f75ae0c531---fijukigekafip.pdfIn PDF document text
    • http://herningbadintra.dk/app/webroot/upload/files/sedijorudozixavapo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=while+away+the+hoursPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e99a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99A 10392 bytes
SHA-256: 770a444adc7673feb1a9c0b947679e527166b328f94720fbf02aa38665df81e9
font_01_sfnt_off0001015b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015B 16776 bytes
SHA-256: 145e3ffc27b57791478fa42959f8ddb4dfc003967b71fa76b284c3d8a28f2303
font_02_sfnt_off00012ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CEB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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