Malicious PDF — malware analysis report

Static analysis result for SHA-256 a568d98e48c79a8a…

MALICIOUS

PDF

72.6 KB Created: 2021-09-23 10:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: b6f3f968071f43426621049868456456 SHA-1: 8f31c4f26b1be90a1fc9eaf8a72bb08a324c2cc5 SHA-256: a568d98e48c79a8a5e5a56da6b047885f061c2f3d1aa8cebb9d77545fb6a42e9
164 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, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pixomot.ru/uplcv?utm_term=ente+mezhuthiri+athazhangal+full+movie+free PDF link annotation
    • https://akapacha.com/userfiles/file/79561131760.pdfIn PDF document text
    • http://degrossier.nl/uploads/file/94672045181.pdfIn PDF document text
    • http://agenziaimmobiliarecannavo.eu/userfiles/files/88958581570.pdfIn PDF document text
    • http://federicozucchettiarchitetto.eu/userfiles/files/34965860922.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/nozapinukapovafaluri.pdfIn PDF document text
    • https://penzion-palice.cz/content/42016702849.pdfIn PDF document text
    • http://campfirewtx.org/userfiles/file/pamadizusilavovuv.pdfIn PDF document text
    • https://hgb.se/filer/file/nugesivikoja.pdfIn PDF document text
    • http://pecsikult.hu/files/file/36991934944.pdfIn PDF document text
    • http://abyss.sk/userfiles/file/jubonupukufopeji.pdfIn PDF document text
    • http://balalajka.nu/media/dudinofolubevikoje.pdfIn PDF document text
    • http://yugang360.com/upload_fck/file/2021-9-6/20210906225943896685.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-9-16/20210916143221269718.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/5ea4544e8cf617472e1d7002e8382f27/lotenewepiniviwejo.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/71db828af349e2fbfd511e8a414583f7/5081562537.pdfIn PDF document text
    • https://currenwatch.myhost360.cn/file/upload/files/09-15-13-37-49-38.pdfIn PDF document text
    • http://upnbkk.com/file_media/file_image/file/fijimoturesabado.pdfIn PDF document text
    • http://cnsgawefgl.netsociality.com/upload/files/45321935434.pdfIn PDF document text
    • http://swiftnb.com/ckfinder/userfiles/files/85992225525.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ae6e1100eb---werexixezulotawagokuxob.pdfIn PDF document text
    • http://thepokewave.com/uploads/files/65325907353.pdfIn PDF document text
    • https://rjpexport.com/files/dikokuben.pdfIn PDF document text
    • https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/d574c3b4a75e162e175f345266a89a22/widabipidowijilogatovuf.pdfIn PDF document text
    • http://sd-admin.fazendapenaazul.com/ckeditor/uploads/files/jiwixidaresivelufan.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_off0000b8b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8B5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d0cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0CC 10704 bytes
SHA-256: 8b5fab2569bc75d5e97293d3dd890f64f7f6f9a152397afc7d444eeae27e56e2
font_02_sfnt_off0000e923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE923 16752 bytes
SHA-256: 8ba5f4701c8f7a272901fbfbeee682818901e0bcfa28bf66c954048bf143aecc

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