Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1a8a0f22fcf992…

MALICIOUS

PDF

101.1 KB Created: 2021-09-07 17:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 65eaabf22a8b377d38c4345f5c7bedcb SHA-1: e3c78a8444a3d50fc45a575d1ecaa1be8d87b254 SHA-256: 0c1a8a0f22fcf992d472fb01b30888accf4e24e67fb34a835ff5fece3db125d4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a ML classifier and ClamAV, indicating it is likely a phishing or malware distribution lure. The document contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. No scripts were extracted, but the presence of external URIs and link farm characteristics strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • 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.
  • 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 http://greffedecheveux.center/upload/ckfinder/files/jikidikazugobeboxexadonuj.pdf In PDF document text
    • http://feldbach-tourismus.at/files/raxezarewavas.pdfIn PDF document text
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/c2b8b888ee07deac607cbf16b187d6c5/62352326391.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afba7833605---68042115216.pdfIn PDF document text
    • http://grawerlik.pl/userfiles/file/lepitemevexubukafusoniv.pdfIn PDF document text
    • https://bahia-group.com/ckfinder/userfiles/files/37446552058.pdfIn PDF document text
    • http://brenno-tojestto.pl/userfiles/file/wawiwi.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b57a739287f---tizow.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16119295464cfd---pepitiwevebilixogisokid.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/23fpa703atbuorc8b7f3tgf757/tixajajekulor.pdfIn PDF document text
    • http://nanouklid.cz/upload/file/31162937443.pdfIn PDF document text
    • http://meyergarden.com/ckfinder/userfiles/files/fojij.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611638c029c3f---lafabutemusagogomate.pdfIn PDF document text
    • http://maxtarget.by/ckfinder/userfiles/files/tufexoki.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/zetugugotoligobuge.pdfIn PDF document text
    • https://economiadecomunion.com/ckfinder/userfiles/files/67311267403.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/kiwefegibanunazikinema.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bdf74ac77d---39964831429.pdfIn PDF document text
    • https://flyingfish-stay.com/userfiles/file/87378585417.pdfIn PDF document text
    • https://marlin-aquarium.ru/ckfinder/userfiles/files/42868275878.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab5286caf63---67911637110.pdfIn PDF document text
    • http://uticahighclassof78.com/clients/8/89/89c70e22fe5ad1405280b455f64975d7/File/riwesoretopid.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=anatomy+and+physiology+textbook+pearson+pdfPDF 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_off000126e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126E7 17496 bytes
SHA-256: 94399e732a5e092bd96ff8f597ee3fc7830434370a31abe89edc825778c4264c
font_01_sfnt_off00015457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15457 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016c6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C6E 11376 bytes
SHA-256: ae6d133a85dd5c934d86001ef325764b50f7c5d5cb3d6a093d13db4fbf6e22cb

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