Malicious PDF — malware analysis report

Static analysis result for SHA-256 9519f7c817cb9056…

MALICIOUS

PDF

81.5 KB Created: 2021-07-15 19:00:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 743e321a780f5ecc30a3577c6e0c73c0 SHA-1: 3347d192210ebbebe2a4d2cbf2caa28161dae1b4 SHA-256: 9519f7c817cb9056ed2c9623cf50ea6eb8d932d02b442b9ee0f02a4112656860
176 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as a phishing trojan. It contains numerous embedded URLs pointing to compromised WordPress sites and IP addresses, suggesting a phishing or malware distribution scheme. The document body is heavily obfuscated and appears to be junk data, indicating the primary malicious function is likely executed via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/e60adec9ba79174f6ecedfc8840caf1e/38451411854.pdf In PDF document text
    • http://rauvuonsach.com/images/uploads/files/51480231371.pdfIn PDF document text
    • http://kutyasturak.hu/images/files/vakeforu.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/7117519789.pdfIn PDF document text
    • http://slstudio.it/userfiles/files/jojemigur.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16099fe5f1daa4---dewiwomavalebunuwawiga.pdfPDF link annotation
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6a80fc671d---xonowofixo.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b834454fef5---temenigipuxosadarinani.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160717f5c7716a---wijamop.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/ftb2873g8lugluv80lqml5ujct/gekekapapugaziduse.pdfIn PDF document text
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/c87ec6b6ef0dbe96187cefb25b724b2a/fabumarikoledego.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a12fd66ca29---zinezivupege.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/l8v79r1epihqaunts3i0rqqnm9/71310574097.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/dusavafox.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/af5f61f18400b561e320dadce57c704c/feniputilelewekotibigotox.pdfIn PDF document text
    • http://hotstamping.pl/files/file/7123103117.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/55c6c4a6318b532297ed6396a9fea319/vowemuwebimasevorabobuzi.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/d608e9cb3b08629e376e4cb0ef8ad403/18850115027.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/368b66d5837da9b51b4ba38abfc20a6c/jesetidugulakobedazazufu.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609923c142c1a---51865424164.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/31961315137.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/76432768339.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=transport+processes+and+separation+process+principles+4th+edition+solution+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_off0000db54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB54 10856 bytes
SHA-256: fbd938afe04b701bb9d782ffb40d07423ca229e9956c0d3855a51cf894941b57
font_01_sfnt_off0000f455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF455 16616 bytes
SHA-256: 5ed1d21e91f42f8b0322bc547cb5f765aee6b082d1bc58ccd6b83730cfecfe0d
font_02_sfnt_off00011f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F9F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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