Malicious PDF — malware analysis report

Static analysis result for SHA-256 47bfd8e243ff6df0…

MALICIOUS

PDF

92.9 KB Created: 2021-06-06 10:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: f75fd2ddf540336109a2dee7e30e0499 SHA-1: 81b9d364f2cd13115f530e27339c98ccededa337 SHA-256: 47bfd8e243ff6df057bd215c7e54e0e0f80aeeff20653d6deeec38c9dc707d1d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious, exhibiting characteristics of a phishing lure. It contains numerous links, many hosted on compromised WordPress sites, directing users to potentially malicious content. The document body, though heavily obfuscated, suggests a theme of 'cool photos' to entice clicks. The presence of external URIs and link farms indicates an attempt to redirect users to attacker-controlled infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9569

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://pistant.ru/uplcv?utm_term=cool+photos+for+whatsapp+dp+girl+download+free+hd PDF link annotation
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/a350458cfb61423263851cf790ddff3d/37005792231.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607bbfee1890c---rodebuzupemu.pdfIn PDF document text
    • http://marinapogon.pl/upload/file/77796924589.pdfIn PDF document text
    • https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/vv9i6m7bl0licutb4vln6pnmuu/38167001857.pdfIn PDF document text
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160714427b0f79---semunamovowere.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16076b831623fb---kununujuvo.pdfIn PDF document text
    • http://altinay-law.com/images/file/27234903628.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/c5dadfe33254d0864015fbabf7311674/57212016519.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b9072d28e83---nabuvepeneduzoxopowituga.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/0ef05cb0c5bc6e6a52c87e430cf93198/wefef.pdfIn PDF document text
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/4600693d1e87580134393db6e4add51a/mifewaxalewuvunonebafede.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608de41ab78a2---narujopogavigurovuwokux.pdfIn PDF document text
    • http://bukharaatlanta.com/sites/default/files/file/54612081671.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075bf5df2ebf---dazitijivobonuzatojasu.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/6472ae2b45ba26174cd7397d04e0a02b/wevogudidalagesivafunu.pdfIn PDF document text
    • http://xn----8sbxab3abskk3a2j.xn--p1ai/media/file/76710423433.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10601 5300 bytes
SHA-256: a5b2a008ed06f0b9c3607af3f2a0b24156418a766b9a948b9240b9c9abf8ed88
font_01_sfnt_off0001180c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1180C 3772 bytes
SHA-256: 4cd60777e265fafd80a6c4ac8a8f541642313e2b1c6670a3899fdf55b12f51bc
font_02_sfnt_off000123b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123B1 10516 bytes
SHA-256: d66800d29def4d13dfff6d8f599c967a3ee40c2cad515edbba17b566225a72e0
font_03_sfnt_off000147be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147BE 13532 bytes
SHA-256: 58da714eebf8fadde86a8aae7f50ec2c7100c19c5ffb317060150d3b8bdfa1fe