Malicious PDF — malware analysis report

Static analysis result for SHA-256 0225145040c0cb46…

MALICIOUS

PDF

93.9 KB Created: 2021-07-02 17:00:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bd93ba87f7ed7987f1d285643970eef2 SHA-1: 0900ccdd728a9236beae4cece9445ab84033ddde SHA-256: 0225145040c0cb46322973adfc82a827c2e96d8c6fc5d349856c5ee354ce3b43
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 as malicious, including a high-confidence ML classifier and ClamAV detection. It contains a link farm pointing to numerous websites, many of which appear to be compromised or disposable hosting, suggesting an attempt to distribute malicious content or manipulate search engine results. The presence of external URIs and a link farm indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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://studio45.live/wp-content/plugins/super-forms/uploads/php/files/6guq4rh5jmju98d4vc2506m097/sajetatetozixowebelofan.pdf
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/6a005dc1ac5a38b3c897b3ab295f64a6/nezepisabiguxejepipadi.pdf
    • https://baptistfriends.org/media/puzuxonuwo.pdf
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b214a38ce4---pilinili.pdf
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/b5f98d6a34d23e0208e37dbfd90b1acb/xetulej.pdf
    • http://sieuthicayxanh.vn/webroot/img/files/44806125702.pdf
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/1a7fe7e41ebb93c86b9cfc8611c0c789/50245610271.pdf
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7b7302c093---6771037786.pdf
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/5a9f08ef8bba5760f1942d68decde22d/42739754467.pdf
    • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/160728321c515b---78309185292.pdf
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160768196956e7---jurav.pdf
    • https://clickkedai.com/userfiles/file/63483916353.pdf
    • https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/37003f80280146e207398619363e5718/45334952687.pdf
    • https://securitydm.com/slicice/file/33122394221.pdf
    • http://transcash.com/ci/userfiles/files/natojawezefumalemiz.pdf
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0dc72ca87---bewuvomowezira.pdf
    • http://www.celso.org/download/vakimesuwezuzabi.pdf
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078f202070a4---farotezofuduzerebasaz.pdf
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/e3ss2fnge7acbs2f2ibpv49ja4/xekidopupuwifirebal.pdf
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2e879bcb51---korixofutapubaxasef.pdf
    • http://apexibd.com/uploads/fck_uploads/file/ferodiwedagalubitob.pdf
    • https://kham.vn/userfiles/file/38514969473.pdf
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160cc3b36af78a---62064999330.pdf
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a5e32ddc8---pudirezonapekewet.pdf
    • http://capmar.eu/userfiles/file/visajevojal.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=process+of+meiosis+cell+division
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d7d.bin
2e3966ad516dda4b54814c2f8e73a1cc9e01db87078083e9880acd39dc3a4dab
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D7D 10444 bytes
font_01_sfnt_off00012519.bin
3c5635ec7198390c19999a347151a39649312a354a3105f777902696ee52d21b
pdf-font-stream PDF embedded font (sfnt) at offset 0x12519 17216 bytes
font_02_sfnt_off0001522d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1522D 16792 bytes