Malicious PDF — malware analysis report

Static analysis result for SHA-256 80cc5e484fe3f775…

MALICIOUS

PDF

85.0 KB Created: 2021-09-02 07:29:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 75d723acbd316cf4f02c294599c5aef0 SHA-1: 06b0f08a59d738bf16048b78f3a8ee62d4a8ff0e SHA-256: 80cc5e484fe3f7756ae382401e68ba65b8bd0d51f62cf5e74af62bae9ea09bc8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed for malicious redirection. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the nature of the URLs and the heuristic firings point towards a phishing or malware distribution scheme, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 http://fitnessklub-impuls.pl/uploads/assets/file/daximotimarigiwajowivabin.pdf In PDF document text
    • http://medi-sen.com/files/files/boledemipidafelazij.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160e582db1b0d9---pedojuxidasavalibulidawo.pdfIn PDF document text
    • https://ewastexperts.com/userfiles/files/nobinurufowofipebit.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cf613eebdf---nikovagepas.pdfIn PDF document text
    • http://imaginove.eu/data/Files/37560789560.pdfIn PDF document text
    • http://urbancollab.com/userfiles/Proj_Name/files/bifis.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/c30df296d9874f2c4f5673e2aeffa771/84862182942.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608438a904108---20143680013.pdfIn PDF document text
    • http://suliaok.com/v15/Upload/file/2021819316279968.pdfIn PDF document text
    • http://shipagents.nl/uploadfiles/file/tojitubavilinifujulago.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/952a1495db6ccd993d3df2cec70c8ee2/60599848185.pdfIn PDF document text
    • http://fizjoactiv.eu/Upload/file/jetit.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/b96de33dfed34a27a3f9e888b016fde0/zipazeded.pdfIn PDF document text
    • http://lakesnwoodskerala.com/uploads/file/pivopajonu.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfed2607187---wodukibivup.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160ae3cdd5f929---69772648187.pdfIn PDF document text
    • https://mycocoa.org/images/upload/files/sidopenafazurulezexaf.pdfIn PDF document text
    • https://funke.be/data/file/kezawigosemegejigumegi.pdfIn PDF document text
    • http://iccarrentals.com/files/file/51591485521.pdfIn PDF document text
    • https://tatsolarlight.com/uploads/files/woleborefegelarope.pdfIn PDF document text
    • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607247a0e2422---ponegisolagurirojonov.pdfIn PDF document text
    • http://writtenmail.com/upload_images/file/gajujugozajuriposasufog.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/0bm8qhm8r9p0pn05atb68auqg8/wesume.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/sespipc1eua7f2ob40n8jkgb19/nojowuziz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=complete+2020+current+affairs+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_off0000e3d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D0 11156 bytes
SHA-256: 8e599b3b2703448113ec11bd2e8b44e34aa3826580c0fe6fd3672ad0f2b09c2f
font_01_sfnt_off0000fde4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE4 18216 bytes
SHA-256: 3b78d4dfe631438532d52c0fd76072e07cde71e5c09bee7932719b468a375d6f
font_02_sfnt_off00012cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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