Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f9975753952e25…

MALICIOUS

PDF

82.1 KB Created: 2021-09-17 02:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 7f3a2308e4f107f71ec3ea14c3665527 SHA-1: 0019f03eb0db5e6a032eb88bcba0305272c8f2c4 SHA-256: c2f9975753952e255e4d9b2a29b07d5331f174d5c7ef1a80d4901f88494fd237
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm on disposable hosting, suggesting an attempt to distribute malicious content or phish for credentials. The embedded JavaScript likely facilitates the redirection or execution of further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://podushka.by/files/files/rupenejazotofotulim.pdf In PDF document text
    • http://studiocalderini.it/userfiles/files/tiwaxivomule.pdfIn PDF document text
    • http://caminodesantiagoenmoto.com/assets/ckfinder/core/connector/php/uploads/files/ninejogadagawasaxos.pdfIn PDF document text
    • http://dancephoto.ru/userfiles/files/lesoduronorifopoxomusuli.pdfIn PDF document text
    • http://akiyastyle.com/app/webroot/js/ckfinder/userfiles/files/xegejub.pdfIn PDF document text
    • http://hytechplus.com/userfiles/file/58294653480.pdfIn PDF document text
    • https://flims.atelierleuthold.ch/userfiles/files/todosofurutapejatetuwemen.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fbbed51c6e---mufuzalisuf.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/0824b5cb40893339bd8aedc70afc7bb4/97855698943.pdfIn PDF document text
    • http://nextgenship.net/upload/file/20210914163161649425.pdfIn PDF document text
    • http://888chji.com/userfiles/files/91012093547.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133a6a2ac4b4---63334739741.pdfIn PDF document text
    • http://fotografoenricogiampieri.it/userfiles/files/vokelaledujesivi.pdfIn PDF document text
    • https://aykutemlak.com/upload/ckfinder/files/nudiba.pdfIn PDF document text
    • http://xn--b1adbbbaeqjtsflbfms0e.xn--p1ai/pict/file/40011459274.pdfIn PDF document text
    • https://granitnet.hu/editor_up/lovozurag.pdfIn PDF document text
    • https://bostaninsaat.com/image/files/19478765045.pdfIn PDF document text
    • http://www.huntsvillepr.com/files/files/woxisemibogo.pdfIn PDF document text
    • https://anakaygame.net/calisma2/files/uploads/dovexat.pdfIn PDF document text
    • http://bsa.by/ckfinder/userfiles/files/lumusuperunoj.pdfIn PDF document text
    • http://embody.box8websites.com/ckfinder/userfiles/files/87131910209.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143bde4c808c---papazofikuworuk.pdfIn PDF document text
    • http://babyshelter.net/assets/upload/files/fawewonugib.pdfIn PDF document text
    • https://distriparkbotlek.nl/userfiles/files/2035857117.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/ff642dfbf5ffb27e67eb010d2368d786/4902928270.pdfIn PDF document text
    • http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/38578897106.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=happymod+horse+paradisePDF 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_off0000db14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB14 17868 bytes
SHA-256: b944172ea40d072981f77a0bc562906f9e64ca8207cde3b1875cebbbca6b0c2a
font_01_sfnt_off000108dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108DC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000120f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120F3 10516 bytes
SHA-256: 5781086ccad7f4ea5aa02d6c28e28ca39e539b114adadf33f303db17aced3ce5

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