Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc117294c00c74c8…

MALICIOUS

PDF

84.6 KB Created: 2021-07-04 20:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: cd1b49103c3edeba44e6e221d3f3e204 SHA-1: 4eb6922190dbc41512d5e60c2bf9deb0146dc703 SHA-256: fc117294c00c74c8f43efafe1f5511cd59d171faeb02b7e4b0a9d0d36c32c345
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs, while some are marked benign, are part of a larger pattern of redirection to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • 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 http://langfordfinancialservices.com/userfiles/files/92242537451.pdf In PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/ceb21a545ef9632263ad7db08bf88345/dotorekuxus.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160863204e5546---radovapedujulerogujunal.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090ce1ab8b35---lemuvis.pdfIn PDF document text
    • http://hotelbelleepoque.bg/userfiles/file/74060489425.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c10cee05c2e---misibidolojufidej.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210503213159727.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/d523bc656f85a50ab122e8f367e61b2f/podekadiguwexekabeso.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/gorulisifolagirata.pdfIn PDF document text
    • http://bulmarconsult.com/files/98538876527.pdfIn PDF document text
    • http://ventilyatsia-v-sochi.ru/ckfinder/userfiles/files/bobubefiravasadixitotige.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/9dc792be8ba11bb3b52861bf265281d8/5184802528.pdfIn PDF document text
    • http://mnwebdesign.dk/userfiles/file/zubar.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608670c613e29---belinabet.pdfIn PDF document text
    • https://oklogistic.lv/upload/file/gorakazulafunafabaza.pdfIn PDF document text
    • http://aqbnb.com/uploadfile/file/dojoduzanoxok.pdfIn PDF document text
    • https://vydavatelstvoklett.sk/userfiles/file/liwazupiwifo.pdfIn PDF document text
    • http://refah4ter.info/basefile/hotelrefah4terir/files/tilafojazegas.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/c56bb98bd9e551e62ee6503dacc7efa0/pokalunuligedason.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/ok1ch43r2fulmuetve3bgm08q7/tinomowe.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/opikojibefavoburefuwo.pdfIn PDF document text
    • http://1parareunion-club.com/clients/4/48/482fc251494624b09083a87f212a12d7/File/49005895112.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160d6c9db65b5f---sowutevabofijefokebebiki.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=1928+congress+sessionPDF link annotation
    • 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_off0000e9b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B2 16680 bytes
SHA-256: 50d52ef8ce98c4934447189623303348a887efcb1af40e4099d63da35498dea6
font_01_sfnt_off000114f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114F9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012d10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D10 10552 bytes
SHA-256: 35128eccf7416598fdd535d382e26c5c78dbe817dce98367d32f7a58077d8911

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