Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f0887402066863f…

MALICIOUS

PDF

80.5 KB Created: 2021-08-09 22:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 3c1cd2eeab7f78a23ef1b65be08d2d23 SHA-1: ff39219edda62e63e4ba886204890a7e9d563e47 SHA-256: 2f0887402066863ff927c3f6bdaace0b04e66ef7c207aaa3062b79bc534f8a4f
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a link farm with numerous URLs pointing to compromised WordPress upload storage and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farm heuristics indicates an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://drafthe.ru/uplcv?utm_term=mera+bhola+hai+bhandari+mp4+download+pagalworld PDF link annotation
    • https://canevastoilestjean.com/upload/editor/file/50876728108.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/8060ca36c917da66b598f2d79148a13e/30421735018.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d26b61f2918---80595028482.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1284467cd3---pepif.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a34bfa33336---namezidi.pdfIn PDF document text
    • http://biosite.ru/images/news/file/26763838272.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a76d1167d0c---30844472272.pdfIn PDF document text
    • https://mamotato.ro/userfiles/file/77956856439.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/73573708318.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607dae239d1db---64556886769.pdfIn PDF document text
    • http://cukrarnakolbaba.eu/obrazky/files/87345505517.pdfIn PDF document text
    • http://growlink.biz/userfiles/file/69745541064.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607d9e37da6a2---93741800449.pdfIn PDF document text
    • http://calisnt.com/uploads/files/29429282625.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/67b4c1631a11a9fbb02c2d1c3e37c425/67042977937.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/70bd91e9ff7122c44cdeb0102a9f3bce/faximigabozovumotimeke.pdfIn PDF document text
    • http://medicapoland.pl/uploaded/file/27553057117.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/glulsuo7ni12ttlha99012r2hp/32384870556.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/93d3c80eca2afcaa67966462d449ca8c/fufeviwuvifisadowawubab.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160860d4463644---zeniziwazuguminub.pdfIn PDF document text
    • https://jewfri.kr/files/image/files/88312986959.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c1e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1E8 16188 bytes
SHA-256: 72a94ace559753d663ed09fdf2dcab53a58a7ca54368dbea72c03cd4b6478675
font_01_sfnt_off0000ec52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC52 16164 bytes
SHA-256: fd494554c7a7a2c4488382a78096c535ff133766c7221992be4f6a58596b2467
font_02_sfnt_off000101c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C9 10872 bytes
SHA-256: 6e47a90acd2634c411c334963471cb5f9d9f974b2b1456ad1134eba688e4c2d1
font_03_sfnt_off00011a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A4D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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