Malicious PDF — malware analysis report

Static analysis result for SHA-256 fec692adb66c314a…

MALICIOUS

PDF

82.5 KB Created: 2021-09-21 05:25:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b22cb4a018417126c797e17b22d54400 SHA-1: ed3f9bedcddc2b901edd046270e02cb947359ce5 SHA-256: fec692adb66c314a866b70f18459f6f0b384114d6cc4cf6b9618514cc7dc92c3
156 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically identified as a phishing trojan. It contains numerous URLs, many pointing to compromised CMS upload directories, suggesting it functions as a link farm to distribute malicious content or phish users. The presence of multiple external URIs and link farm heuristics indicates a clear intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 https://drafthe.ru/uplcv?utm_term=last+day+on+earth+ultra+mod PDF link annotation
    • http://azseal.net/uploads/userfiles/file/64014590548.pdfIn PDF document text
    • http://brukikostka.pl/uploads/page/file/33704490783.pdfIn PDF document text
    • http://guidesdugrandlarge.fr/images/import/file/binexunu.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/161420f08c5e12---baloxawalideji.pdfIn PDF document text
    • http://efuegypt.org/userfiles/file/94316898974.pdfIn PDF document text
    • https://sportuna.be/ckfinder/userfiles/files/80451923363.pdfIn PDF document text
    • http://chiaranannini.com/userfiles/files/koduteduxez.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/686504538d21ccc28ce1b114f21f5cec/nawijijo.pdfIn PDF document text
    • http://afslab.asia/upload/files/72546151526.pdfIn PDF document text
    • http://texinpack.com/uploadfile/file///2021090700321655.pdfIn PDF document text
    • http://debeleven.net/UserFiles/File/6200274302.pdfIn PDF document text
    • https://mimpiindahsatu.com/contents/files/50544009208.pdfIn PDF document text
    • http://fujieshubao.com/zk/UploadFile/file/2021091704430073499.pdfIn PDF document text
    • https://bcbc3399.com/upload/files/25191010277.pdfIn PDF document text
    • http://diversecityuk.com/userfiles/file/37043119233.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137de1dc428a---41676196303.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/bb42ca50feebe046c3e48323b1eab5db/daselexitabeku.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16141678025924---53749063520.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/63c1c8c9dca15e27071c290fa876e3a0/17288624320.pdfIn PDF document text
    • http://alltimescare.com/attachment/files/52703106302.pdfIn PDF document text
    • http://ottuk-e.org/userData/board/file/vikifikepuwep.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141ef32a982b---bigiwofolosufidixaweluva.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16132527e31324---woganesafuxuxil.pdfIn PDF document text
    • https://ises.smithpressautomation.com/phpsites/vertical_living/uploads/file/romarusosik.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/16133ed58e3602---setuzevudirine.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f4dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DC 10592 bytes
SHA-256: 61ae6c49d3b701e1939fe7e300e82ca2e5b9c3f705f6f286b98287f2c6db3a52
font_02_sfnt_off00010ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE2 18060 bytes
SHA-256: 3e334fd3d1b23795329a2c37d764f07a4a62dc875c90b4be5b561fa29524bd50

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