Malicious PDF — malware analysis report

Static analysis result for SHA-256 beabd0c42ce8ac2d…

MALICIOUS

PDF

99.9 KB Created: 2021-09-05 03:58:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1b429aff7fee2d41e1d898a0e4b50f71 SHA-1: fad0551c9deddfcc19597248ac6d26c24968aaf5 SHA-256: beabd0c42ce8ac2d1ad73687e6c99bc48f495a4ffbe0b8ca8b3aea870cef7935
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various websites, many of which appear to be compromised WordPress installations or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of external URI links and the 'link farm' heuristic suggest the document's primary purpose is to redirect users to these potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9875

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://allytemp.ru/uplcv?utm_term=eduardo+galeano+venas+abiertas+de+america+latina+pdf PDF link annotation
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/c08c7493e11f9262c9b18240e4939064/bojimeviwenobelekaw.pdfIn PDF document text
    • http://piazzademarini3ge.com/userfiles/files/vopuworekidunuzo.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/42067495550.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1609a449da3bbd---wekuzugevireju.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1610b15f119050---pumopakaw.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b84d3fc6f---zufenexedifikunivujuwax.pdfIn PDF document text
    • http://www.chiringuitomediterraneo.com/ckfinder/userfiles/files/93857328874.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/428e2558b0132fa40eac605039508765/zirumoxefud.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a63e0f681a0---robegibasiledufawod.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/ljo8b26g5qt09n5qcb0feet8ic/vuboruzifujopokifozisan.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/64863eb17eedac5bafc0da59d1c32e25/35091055796.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/71806133228.pdfIn PDF document text
    • https://eventaipei.com/upload/files/napojumorev.pdfIn PDF document text
    • https://unitedfightalliance.com/ckfinder/userfiles/files/denebugexatofijibek.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609db6689830d---70486288473.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/5bgbrvol4gbcue2e5ctauf2r00/9271417297.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/16095c8ac1c57d---foxavatapikafe.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/tizitotigifirebar.pdfIn PDF document text
    • http://rencontres-icare.org/userfiles/file/19539765834.pdfIn PDF document text
    • https://clubslotalmatriche.com/calcas/file/ropetuworekeped.pdfIn PDF document text
    • http://beccaro.it/userfiles/files/bizegokazavoxatiwotowa.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/4k113q9d4jpnth6tf3nhqg3qr4/xegemumor.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/kejubeduw.pdfIn PDF document text
    • http://vitalbafitnessclub.eu/userfiles/files/xuwavowasufomunezukofa.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bf228f9217f---35973367316.pdfIn PDF document text
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/77227f5ccac212e2c129ced8e4141110/32447947522.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_off000119e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000131fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131FB 21148 bytes
SHA-256: e5ecb6542e2a1e7e8a60c6ce1d0088b6b176a026e357f1e0bc32d3a4e5bc8fa4
font_02_sfnt_off00016746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16746 11252 bytes
SHA-256: 623e1f334425b18c118213931b2ce90d3008194787ed96aeaad9e63adf5e915b

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