Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ebd0b66d0947d8f…

MALICIOUS

PDF

80.4 KB Created: 2021-06-26 14:51:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 3f64d2e48aa6a840a2692d3212497af9 SHA-1: d1b1ca53e556a49ff7c9cb48f10be7ca46a39b54 SHA-256: 6ebd0b66d0947d8f4b7aab3d662ea96b9cb529dad82da6996a4a62de9af5bb1a
144 Risk Score

Malware Insights

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

This PDF file contains numerous embedded URLs, many of which point to compromised WordPress installations or disposable domains. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely to lure users to phishing sites or download further malware. The file's structure as a link farm on potentially untrusted hosts supports this assessment.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4647

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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
  • 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://www.toptehnik.si/images/sasefeketevefigopitezufo.pdf In PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/s1sqvjie7rblcv0q0ksad813rs/58533650644.pdfIn PDF document text
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8201e1a18---40595291333.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a377b7456f4---90863396708.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/wapan.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c9680362010---38016612925.pdfIn PDF document text
    • http://chipublichouse.com/ckfinder/userfiles/files/mujipoxuw.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607569802aeaf---46906610122.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/b7a10c40d31237a0d60c6e3ab533c170/bapoxuzigizon.pdfIn PDF document text
    • https://gretajensen.com/ckfinder/userfiles/files/dazonodomo.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/0fe97f31f01691d0eae23773c4a998a6/pexitapegewudutanidegu.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607526463162d---xuwitejovapowumawixowaga.pdfPDF link annotation
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cc9d47a0ed4---notuj.pdfIn PDF document text
    • http://ruresept.ru/files/file/vozupaludujerudera.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/86655739881.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/16086ca6b33bd4---81316035510.pdfIn PDF document text
    • http://bjallstar.com/upload/file/letemusofaxagawe.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/4k61vjkbtt6kvio184e44t74k8/dojab.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160859e37b3092---xafetupuxumov.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/52261357338.pdfIn PDF document text
    • https://rzfmuhasebe.com/userfiles/file/30124942945.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cc82457da8---9479387302.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=family+and+friends+4+class+book+answersPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF251 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010a68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A68 11028 bytes
SHA-256: 35eed12e3d61be5ea9cfc86a30b2f692cd2842123f754c18d893000ac5215307