Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1b0235ee485073e…

MALICIOUS

PDF

84.5 KB Created: 2021-06-28 20:08:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ab690ab45b01bd94ab773f25e77dcbf8 SHA-1: 59d212fd06f3e69a4ad49b7b896ea630c06c88b5 SHA-256: e1b0235ee485073e0dc812ed561950446f5fa6b984034b8205b5843d855af43c
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many hosted on compromised WordPress sites and disposable domains, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded links are designed to redirect users to download further malicious PDF files, likely containing exploits or further phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://catamma.ru/uplcv?utm_term=banking+operations+books+pdf PDF link annotation
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/bdcbe2db4d82b611936ccd8399250cc3/sazojepenedowadifinaze.pdfIn PDF document text
    • https://advantagelic.com/singhania/downloads/file/zedudovapenido.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b31644f074---34004085201.pdfIn PDF document text
    • http://adria-ex.com/images/blog//file/dikoworawuwava.pdfIn PDF document text
    • http://mp-journal.com/media/file/31250361186.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c778f751015---74001105429.pdfIn PDF document text
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/0cf1de42cbe4ab354269d71f44227668/31482719239.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607944cd7fb34---96810150952.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aec7762e21c---ritevezaritapudelam.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a69c3dec82---gekukivexatujupufobut.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/vm3r25224ns5ggbsd0qib5616e/dawikebigukix.pdfIn PDF document text
    • http://habitat3.eu/userfiles/files/xafiwowavuwewakanaruvuwi.pdfIn PDF document text
    • http://spreewaldatelier.de/img/editor/file/10256580773.pdfIn PDF document text
    • https://kvkumariajnkvv.org/singhania/downloads/file/41308878966.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607e10658bf70---95566593905.pdfIn PDF document text
    • http://meta-min.com/files/tuvopakumo.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0ab1b976d5---gevabovomefufotewefi.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/8fd018d6783135e49c23b66f3259cc62/16048165916.pdfIn PDF document text
    • https://ambulatorioveterinariosismondi.eu/file/93525159702.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/ue860gvda4mhun32nb0g0i4ung/48390374224.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16076fe540b7f7---fenon.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_off0000e624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE624 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fe3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3B 10912 bytes
SHA-256: 4322953073c3589375b8c3f95784f2c5695c6673af6307578a722fcd62ff8892
font_02_sfnt_off0001173d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1173D 17552 bytes
SHA-256: 70b76c0d94e845c42a516f92748463fc06738c2064f4a38bc2360e1eefed167e

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