Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd9c794d416db30…

MALICIOUS

PDF

69.8 KB Created: 2021-05-01 04:24:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: ea3737c22a550125bb2cebc34553becd SHA-1: dc98d99cabe0970a5216162522d67c050ce665fb SHA-256: 5fd9c794d416db3053f2cdb1a5fd5ea7eee603926478e666d75b18073718db6c
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm pointing to multiple compromised WordPress sites, suggesting it is used to distribute further malware or host phishing content. The presence of numerous links on disposable hosting and compromised CMS uploads reinforces its role as a distribution or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9381

Heuristics 5

  • 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
  • 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.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077dc9073287---sukelabaduvopafefukukokav.pdf In PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/5d4fd03a67e42e4e4650e777154b5629/30154359106.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160741e18ea1b9---zukidomudotukafi.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/33e49c8ac28e63d601f792b3c003f2c6/70488990766.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1608c701394983---60529313903.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/cb3c94144ef5b794653aace5d15b42b6/mabimoneva.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/6vvt06vggs8fuccsr5e7aego2t/tidise.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/nt14agh0dlqletas2a0sl0nd97/wanotibibexire.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/h2rnggkm52eoqmco2g9b37jmuj/12066325960.pdfIn PDF document text
    • http://doubletroubels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb96b6f658---wamajitewetibasowiked.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1606ed56ab410f---muluzaxewupidanasitojiri.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/ec7eb25cf80ef272da72d3d76f73aec2/xukukuxufutula.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/4c1b3cca085b94c7b26ad0286fcf93a3/90989524171.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/m9ojfpje6cqgtb3gpbqs9kqojh/31893156532.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=formal+letter+layout+canadaPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00010f81.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10F81 2545 bytes
SHA-256: 826aac04b3214e13114efe7ab6c6caf2e769d135672aca7f957c8fc56cd269d5
font_00_sfnt_off0000dccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCF 4796 bytes
SHA-256: b62ce1d8c0d26fc395c3bae8e3d0dfa9bbc22d390cf32b36348371266a57ae4e
font_01_sfnt_off0000ed02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED02 10036 bytes
SHA-256: e4ee4ba93eb695c45bcb193841417bf2d55ecb7c22d7aab31d79000db8f4fb67

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