Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6ae85bcd10ba885…

MALICIOUS

PDF

86.5 KB Created: 2021-06-29 09:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: e94ef826c8998cdee9d9041a5fdcaef9 SHA-1: d3b7f7f3dd90a035b91cc43bd9cb2a6aae869a75 SHA-256: c6ae85bcd10ba885b906fde5e0e40bb769ce366cb16f5e15ee575178afba5b55
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan payload. It contains numerous links to compromised websites, likely intended to trick users into downloading further malicious content. The presence of a 'download button' heuristic further supports a social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://huntic.ru/uplcv?utm_term=12th+standard+science+book PDF link annotation
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1d9d2c0d3e---52833489981.pdfIn PDF document text
    • https://sahodayabbsr.com/test/fckeditor/file/gapodu.pdfIn PDF document text
    • http://veterinariomauracotti.it/userfiles/files/pigozutokizamiwodora.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b83a69c9a2a---jidatowilezenativekoxiwav.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088bdcd06f16---diwurosejilipo.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/0ec0078a9819c7879ce0ce10f0f50d33/64054877671.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/ni6vdhvhuc0n5imov7j70uuudm/3057345072.pdfIn PDF document text
    • https://anmimar.com/royal/userfiles/file/57562945554.pdfIn PDF document text
    • http://benardoutlite.com/admin/fckeditor/fckdata/file/26282980409.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf2ea817615---kovagoripukoxikamisadorap.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160bf51d81e15a---dafiwexoxariboxowunivaxof.pdfIn PDF document text
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/fd4ce82aa6860ae6bab055e564abe55f/davoniwojeboluwa.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a5379343d---sizofikizabopedati.pdfIn PDF document text
    • https://jiu-hang.com/upfiles/editor/files/42409480409.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d3af7103f9---95038911508.pdfIn PDF document text
    • http://theettiaresmontreal.com/clients/f/f0/f03dfc1790708d0b03c48e9879ef2ea6/File/fetokowanowawazonure.pdfIn PDF document text
    • http://aweibel.com/Photo/file/nilezefobixemelego.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a6dc05e28ff---97471707191.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608801c133a45---23737371241.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_off0000f095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF095 16888 bytes
SHA-256: 71b4c8a092da500c371472069b4c80527abd8d5142ad5a98be07b337beb989e5
font_01_sfnt_off00011ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CA2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000134b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134B9 10728 bytes
SHA-256: 43576c2c8232e75c56d41ae91b09903203e33d1decaf9a3b6ae54edb845401a0

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