Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6d701a06811be7…

MALICIOUS

PDF

88.0 KB Created: 2021-07-03 19:07:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: b3a5af6de30cb56a69342e01c1e13c39 SHA-1: e7a3fde3f10965d734e364339e27bded070f3dee SHA-256: fe6d701a06811be74d2e92f93b8f776dbebaf9e05783880f80a2f60c27e32a2b
156 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 identifying it as Pdf.Phishing.Trojan. The file contains numerous external URIs and is structured as a link farm, likely intended to redirect users to phishing sites or download further malware. The presence of compromised CMS upload links and disposable hosting further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 https://wastran.ru/uplcv?utm_term=mtech+after+msc+computer+science PDF link annotation
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/8fc36727899f7fdfab66004bbacf7d98/paxakotavifakapobumozasex.pdfIn PDF document text
    • https://efnnma.org/files/file/16121518668.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076344493452---mefigepawevebolejolif.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/a8qkdectf601uv121qapv1fekq/xerapaboga.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/0305d684e17d6d9f1f435ea5b3bf125b/89364655335.pdfIn PDF document text
    • https://securitydm.rs/slicice/file/66651216576.pdfIn PDF document text
    • https://scheidungsrecht-best.de/userfiles/file/netigosisubinovexe.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160bd042dbd40a---tanivusano.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/7dcd9ed7bcf01c49ccebbf8fb11c0382/rafuketusike.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/951758bd3d6359c889661422fb91f0bb/63878358903.pdfIn PDF document text
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aba77e7e311---fomanegenaxu.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160842703205fe---jojeka.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/3201452d2ed941ae6099f2c7b4607c89/17140854488.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089dd1455c08---mazusidozozevat.pdfIn PDF document text
    • http://zuestag.ch/userfiles/files/tixupikopedijad.pdfIn PDF document text
    • http://glotecgh.com/upload/editor/file/28913255446.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077f747dcc35---46896651413.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bde6e91231f---96808145135.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098b8dde1444---16970351578.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16071f6b36f0cc---kutaxufeposipuvusibog.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/4bdf91856cf5987a5acbca80f079b035/tupum.pdfIn PDF document text
    • http://younewstoday.com/task/userimages/file/7400929919.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_off0000f4e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E2 10792 bytes
SHA-256: a823cd53e89478b7b0b531b7c4b8289de332b64145c47e02747eee32a2f1504e
font_01_sfnt_off00010d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D93 16704 bytes
SHA-256: 7687301d2fd07a18921310b639f81fd9030b17babb52d27f7c4b7c5f706f1cfc
font_02_sfnt_off00013948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13948 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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